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Powerhead Gasket - Mercury

Block Cover Gasket
Your Price:
$10.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Block Cover Gasket

676-18-2807

Interchanges/Replaces

GLM

  • 32320

Mallory

  • 9-60047

Mercury Marine

  • 27-53863
  • 27-64940
  • 27-72506
  • 27-85494
  • 27-98185
  • 27-981851
  • 27-981852
  • 27-981853

Gasket Set, Powerhead
Your Price:
$128.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Gasket Set, Powerhead

676-18-64217

Interchanges/Replaces

Mallory

  • 9-64217

Mercury Marine

  • 27-815791A00

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2735Mercury Marine
  • 27-190506
Mercury Sport Jet
  • 27-190506
1Divider Plate Gasket N/A
18-8305Mercury Marine
  • 26-814754
  • 42838
  • 69668
  • 88726
Mercury Race Outboard
  • 428381
  • 69668
Mercury Sport Jet
  • 26-814754
1Divider Plate Seal N/A
18-0936GLM
  • 31990
Mallory
  • 9-60057
Mercury Marine
  • 27-67624
  • 27-78690
  • 27-78690002
Mercury Sport Jet
  • 27-78690
  • 27-78690002
2Relief Valve Plate Gasket N/A
18-2506-1Mallory
  • 9-60046
Mercury Marine
  • 27-99176
  • 27-991762
  • 27-991763
  • 27-991764
Mercury Race Outboard
  • 27-99176
1Exhaust Plate Gasket N/A
18-0644GLM
  • 37530
Mercury Marine
  • 27-146972
Mercury Sport Jet
  • 27-146972
1Reed Plate Gasket N/A
18-0645GLM
  • 37540
Mallory
  • 9-60056
Mercury Marine
  • 27-167371
Mercury Sport Jet
  • 27-167371
1Adapter Plate Gasket N/A
18-2511GLM
  • 32510
Mercury Marine
  • 27-67074
  • 27-88727
  • 27-99173
  • 27-99173 2
  • 27-991731
  • 27-991734
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-0643GLM
  • 37570
Mercury Marine
  • 27-183071
  • 27-183076
1Powerhead Base Gasket N/A
18-2513GLM
  • 30890
Mallory
  • 9-60049
  • 9-60050
Mercury Marine
  • 27-11338
  • 27-67208
Mercury Sport Jet
  • 27-11338
1Crankcase Gasket (Cyl. Block Sealing V-6) N/A
NSSMercury Marine
  • 8597721
6SealNo ImageN/A
NSSMercury Marine
  • 85845211
2SealNo ImageN/A

Power Trim Relay Solenoid
Your Price:
$19.99

Mercruiser Power Trim Relay Solenoid

137-8081

  • Main terminals run perpendicular to mounting bracket
  • Replaces Mercruiser OEM # 89-96158T
  • Includes a cap for main terminals
  • Length is 2-1/2", Width is 2-1/4" and Height is 2-3/8"
  • 12v Relay Solenoid, Isolated base
  • Includes nuts for terminals
  • Does not include mounting hardware
  • Electrical spec: 7 AMPS WHILE HOLDING 30 AMPS FOR SPLIT SECOND TO ENERGIZE

TAKE NOTE of which way the main terminals face on the Trim Relay Solenoid you are replacing. This model goes perpendicular of the mounting holes, the 137-8249 goes parallel.

Overhaul Gasket Set
Your Price:
$111.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Overhaul Gasket Set

676-18-4359

Key Features:

  • Does not Include Head Gaskets

Interchanges/Replaces

GLM

  • 39520

Mallory

  • 9-64204

Mercury Marine

  • 27-815791A90
  • 27-815791A92
  • 27-815809A90
  • 27-815810A90

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-0135GLM
  • 32880
Mercury Marine
  • 27-78246
  • 27-782461
2Adapter Cover Gasket N/A
18-0182GLM
  • 30610
Johnson/Evinrude Outboard
  • 310058
Mallory
  • 9-60002
Mercury Marine
  • 27-62386
  • 27-62386001
Mercury Race Outboard
  • 27-62386001
2Thermostat Gasket N/A
18-0384GLM
  • 32350
Mercury Marine
  • 27-817533
  • 27-89221
  • 27-892211
  • 27-8M0027781
3Carburetor Gasket N/A
18-0641GLM
  • 37590
Mercury Marine
  • 27-828292
Mercury Sport Jet
  • 27-828292
3Carburetor Mounting Gasket N/A
18-0642GLM
  • 37560
Mallory
  • 9-60051
Mercury Marine
  • 27-19050
  • 27-190502
  • 27-190503
  • 27-190505
1Divider Plate Gasket N/A
18-0643GLM
  • 37570
Mercury Marine
  • 27-183071
  • 27-183076
1Powerhead Base Gasket N/A
18-0644GLM
  • 37530
Mercury Marine
  • 27-146972
Mercury Sport Jet
  • 27-146972
1Reed Plate Gasket N/A
18-0645GLM
  • 37540
Mallory
  • 9-60056
Mercury Marine
  • 27-167371
Mercury Sport Jet
  • 27-167371
1Adapter Plate Gasket N/A
18-0646GLM
  • 37550
Mercury Marine
  • 27-813859
  • 27-883775
Mercury Sport Jet
  • 27-813859
  • 27-881034
1Reed Plate Gasket N/A
18-0838Yamaha Outboard
  • 93210-37M25-00
1O-Ring N/A
18-0858GLM
  • 81430
Mallory
  • 9-76516
Mercruiser Stern Drive
  • 25-54029
Mercury Marine
  • 25-54029
Mercury Sport Jet
  • 25-54029
1O-Ring N/A
18-0860GLM
  • 81520
Mercruiser Stern Drive
  • 25-62700
Mercury Marine
  • 25-62700
Mercury Sport Jet
  • 25-62700
1O-Ring N/A
18-0936GLM
  • 31990
Mallory
  • 9-60057
Mercury Marine
  • 27-67624
  • 27-78690
  • 27-78690002
Mercury Sport Jet
  • 27-78690
  • 27-78690002
2Relief Valve Plate Gasket N/A
18-2509GLM
  • 31690
Mercury Marine
  • 27-67751
3Carburetor Mounting Gasket N/A
18-2511GLM
  • 32510
Mercury Marine
  • 27-67074
  • 27-88727
  • 27-99173
  • 27-99173 2
  • 27-991731
  • 27-991734
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2513GLM
  • 30890
Mallory
  • 9-60049
  • 9-60050
Mercury Marine
  • 27-11338
  • 27-67208
Mercury Sport Jet
  • 27-11338
2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
18-2914GLM
  • 31010
Mallory
  • 9-60034
Mercruiser Stern Drive
  • 27-32433
  • 27-856081
  • 27-8M0090319
Mercury Marine
  • 27-30603
  • 27-32433
  • 27-85608
  • 27-856081
  • 27-8M0090319
1Water Pump Gasket N/A
18-2915GLM
  • 31020
Mallory
  • 9-60035
Mercruiser Stern Drive
  • 27-32434
  • 27-856091
  • 27-858524
Mercury Marine
  • 27-30604
  • 27-32434
  • 27-85609
  • 27-856091
  • 27-858524
1Water Pump Gasket N/A
18-2919GLM
  • 31050
Mallory
  • 9-60031
Mercruiser Stern Drive
  • 27-426311
Mercury Marine
  • 27-42631
  • 27-426311
1Water Pump Gasket N/A
18-3110GLM
  • 12830
Mallory
  • 9-43604
Mercruiser Stern Drive
  • 26-38970
Mercury Marine
  • 26-29677
  • 26-36557A1
  • 26-38970
2Water Pump Housing Bushing N/A
18-7153GLM
  • 81180
Mallory
  • 9-76505
Mercruiser Stern Drive
  • 25-25439
Mercury Marine
  • 25-25439
Mercury Race Outboard
  • 25-25439
Mercury Race Sterndrive
  • 25-25439
OMC Stern Drive
  • 3852565
  • 911851
Volvo Penta
  • 3852565
  • 997368
1O-Ring N/A
18-7157GLM
  • 83410
Mallory
  • 9-76542
Mercruiser Stern Drive
  • 25-29976
Mercury Marine
  • 25-29976
1O-Ring N/A
18-7159GLM
  • 83440
Mallory
  • 9-76544
Mercruiser Stern Drive
  • 25-31534
  • 25-48451
Mercury Marine
  • 25-31534
1O-Ring N/A
18-7174Chrysler/Force/US Marine
  • 25-45711
  • 25-F455342
GLM
  • 81140
Johnson/Evinrude Outboard
  • 326649
  • 553127
Mallory
  • 9-76553
Mercruiser Stern Drive
  • 25-45711
Mercury Marine
  • 25-45711
Mercury Sport Jet
  • 25-45711
OMC Stern Drive
  • 326649
  • 553127
  • 910582
1O-Ring N/A
18-7176Chrysler/Force/US Marine
  • 25-90011
  • 25-F74305
  • F694555
  • F74035
  • F74305-1
GLM
  • 81390
Mallory
  • 9-76554
Mercruiser Stern Drive
  • 25-896523
  • 25-90011
Mercury Marine
  • 25-896523
  • 25-90011
1O-Ring N/A
18-8305Mercury Marine
  • 26-814754
  • 42838
  • 69668
  • 88726
Mercury Race Outboard
  • 428381
  • 69668
Mercury Sport Jet
  • 26-814754
1Divider Plate Seal N/A
18-2506-1Mallory
  • 9-60046
Mercury Marine
  • 27-99176
  • 27-991762
  • 27-991763
  • 27-991764
  • Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A

    Powerhead Base Gasket
    Your Price:
    $6.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Base Gasket

    676-18-0988

    Interchanges/Replaces

    GLM

    • 31640

    Mallory

    • 9-60058

    Mercury Marine

    • 27-37976
    • 27-62860
    • 27-628601

    Powerhead Base Gasket
    Your Price:
    $9.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Base Gasket

    676-18-0139

    Interchanges/Replaces

    GLM

    • 31980

    Mallory

    • 9-60059

    Mercury Marine

    • 27-76589
    • 27-78623
    • 27-88451
    • 27-884511

    Powerhead Gasket Set
    Your Price:
    $156.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4317

    Interchanges/Replaces

    GLM

    • 39440

    Mallory

    • 9-64200

    Mercury Marine

    • 27-90484A32
    • 27-90484A86
    • 27-90484A88

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0129GLM
    • 30670
    Mallory
    • 9-60062
    Mercury Marine
    • 27-65744
    • 27-657441
    • 27-657442
    • 27-657443
    6Reed Block Gasket N/A
    18-0135GLM
    • 32880
    Mercury Marine
    • 27-78246
    • 27-782461
    1Adapter Cover Gasket N/A
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    2Thermostat Gasket N/A
    18-0359GLM
    • 30740
    Mercury Marine
    • 27-67275
    • 27-672751
    1Induction Silencer Cover Gasket N/A
    18-0384GLM
    • 32350
    Mercury Marine
    • 27-817533
    • 27-89221
    • 27-892211
    • 27-8M0027781
    3Carburetor Gasket N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-0860GLM
    • 81520
    Mercruiser Stern Drive
    • 25-62700
    Mercury Marine
    • 25-62700
    Mercury Sport Jet
    • 25-62700
    1O-Ring N/A
    18-0936GLM
    • 31990
    Mallory
    • 9-60057
    Mercury Marine
    • 27-67624
    • 27-78690
    • 27-78690002
    Mercury Sport Jet
    • 27-78690
    • 27-78690002
    2Relief Valve Plate Gasket N/A
    18-0952GLM
    • 32330
    Mercruiser Stern Drive
    • 27-88907003
    Mercury Marine
    • 27-88907
    • 27-88907003
    Mercury Sport Jet
    • 27-88907
    2Relief Valve Plate Gasket N/A
    18-2501GLM
    • 31680
    Mallory
    • 9-60060
    Mercury Marine
    • 27-67738
    • 27-93536
    • 27-935361
    1Reed Block Housing Gasket N/A
    18-2502GLM
    • 32150
    Mercury Marine
    • 27-87396
    • 27-90484
    • 27-904841
    Mercury Race Outboard
    • 27-90484
    • 27-904841
    2Divider Plate Gasket N/A
    18-2503GLM
    • 32530
    Mercury Marine
    • 27-78068
    • 27-99177
    • 27-991771
    • 27-991772
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2509GLM
    • 31690
    Mercury Marine
    • 27-67751
    3Carburetor Mounting Gasket N/A
    18-2510GLM
    • 32450
    Mercury Marine
    • 27-96761
    • 27-967611
    1Reed Block Housing Gasket N/A
    18-2511GLM
    • 32510
    Mercury Marine
    • 27-67074
    • 27-88727
    • 27-99173
    • 27-99173 2
    • 27-991731
    • 27-991734
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2513GLM
    • 30890
    Mallory
    • 9-60049
    • 9-60050
    Mercury Marine
    • 27-11338
    • 27-67208
    Mercury Sport Jet
    • 27-11338
    2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
    18-2803GLM
    • 32120
    Mercury Marine
    • 27-90430
    • 27-904301
    3Carburetor Mounting Gasket N/A
    18-2808GLM
    • 32440
    Mercury Marine
    • 27-96278
    Mercury Race Outboard
    • 27-96278
    2Cylinder Cover Gasket N/A
    18-2826GLM
    • 31040
    Mallory
    • 9-60036
    Mercruiser Stern Drive
    • 27-33146
    • 27-856704
    Mercury Marine
    • 27-33146
    • 27-85610
    • 27-856101
    1Water Pump Base Gasket N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-3110GLM
    • 12830
    Mallory
    • 9-43604
    Mercruiser Stern Drive
    • 26-38970
    Mercury Marine
    • 26-29677
    • 26-36557A1
    • 26-38970
    2Water Pump Housing Bushing N/A
    18-3863GLM
    • 35880
    Mallory
    • 9-63855
    Mercury Marine
    • 27-96281
    • 27-96281T01
    • 27-96542
    • 27-96542-1
    • 27-965422
    2Head Gasket N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7157GLM
    • 83410
    Mallory
    • 9-76542
    Mercruiser Stern Drive
    • 25-29976
    Mercury Marine
    • 25-29976
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive /strong>
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7162Chrysler/Force/US Marine
    • 25-33145
    GLM
    • 82260
    Johnson/Evinrude Outboard
    • 302337
    Mallory
    • 9-76547
    Mercruiser Stern Drive
    • 25-32424
    • 25-33145
    Mercury Marine
    • 25-33145
    Mercury Sport Jet
    • 25-33145
    OMC Stern Drive
    • 302337
    • 302377
    • 3852044
    Sears
    • 25-33145
    Volvo Penta
    • 3852044
    1O-Ring N/A
    18-7164GLM
    • 81260
    Johnson/Evinrude Outboard
    • 302537
    Mercruiser Stern Drive
    • 25-33466
    • 25-67675
    • 25-846356
    • 27-898101789
    Mercury Marine
    • 25-33466
    • 25-67675
    • 25-846356
    1O-Ring N/A
    18-7168GLM
    • 80120
    Johnson/Evinrude Outboard
    • 202893
    Mallory
    • 9-76550
    Mercruiser Stern Drive
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    Mercury Marine
    • 25-20587
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    OMC Stern Drive
    • 202893
    • 3852033
    Volvo Penta
    • 3852033
    4O-Ring N/A
    18-7174Chrysler/Force/US Marine
    • 25-45711
    • 25-F455342
    GLM
    • 81140
    Johnson/Evinrude Outboard
    • 326649
    • 553127
    Mallory
    • 9-76553
    Mercruiser Stern Drive
    • 25-45711
    Mercury Marine
    • 25-45711
    Mercury Sport Jet
    • 25-45711
    OMC Stern Drive
    • 326649
    • 553127
    • 910582
    2O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7406GLM
    • 80100
    OMC Stern Drive
    • 3852523
    • 911311
    Volvo Penta
    • 3852523
    1O-Ring N/A
    18-7411GLM
    • 81240
    Johnson/Evinrude Outboard
    • 321921
    Mercruiser Stern Drive
    • 25-35480
    • 25-8M2000816
    Mercury Marine
    • 25-35480
    • 25-47386
    1O-Ring N/A
    18-7421GLM
    • 80070
    Mercury Marine
    • 25-16524
    • 25-20415
    2O-Ring N/A
    18-7812GLM
    • 40360
    Mallory
    • 9-37751
    Mercury Marine
    • 66599A2
    • 89031A2
    1Fuel Pump Kit N/A
    18-2506-1Mallory
    • 9-60046
    Mercury Marine
    • 27-99176
    • 27-991762
    • 27-991763
    • 27-991764
    Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-2508-1GLM
    • 32540
    Mercury Marine
    • 27-96440
    • 27-99776
    • 27-997761
    2Exhaust Plate Gasket N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    9-76560Mercury Marine
    • 25-38099
    1O-RING N/A
    NSSMercury Marine
    • 27-672741
    1Gasket, Choke Plate to CarburetorNo ImageN/A

    Powerhead Gasket Set
    Your Price:
    $130.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4319

    Interchanges/Replaces

    GLM

    • 39250

    Mallory

    • 9-64201
    • 9-64212

    Mercury Marine

    • 27-11338A85
    • 27-11338A88
    • 27-89221A32
    • 27-89221A84
    • 27-89221A85
    • 27-89221A88

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0129GLM
    • 30670
    Mallory
    • 9-60062
    Mercury Marine
    • 27-65744
    • 27-657441
    • 27-657442
    • 27-657443
    6Reed Block Gasket N/A
    18-0135GLM
    • 32880
    Mercury Marine
    • 27-78246
    • 27-782461
    1Adapter Cover Gasket N/A
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    2Thermostat Gasket N/A
    18-0359GLM
    • 30740
    Mercury Marine
    • 27-67275
    • 27-672751
    1Induction Silencer Cover Gasket N/A
    18-0384GLM
    • 32350
    Mercury Marine
    • 27-817533
    • 27-89221
    • 27-892211
    • 27-8M0027781
    3Carburetor Gasket N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-0860GLM
    • 81520
    Mercruiser Stern Drive
    • 25-62700
    Mercury Marine
    • 25-62700
    Mercury Sport Jet
    • 25-62700
    1O-Ring N/A
    18-0936GLM
    • 31990
    Mallory
    • 9-60057
    Mercury Marine
    • 27-67624
    • 27-78690
    • 27-78690002
    Mercury Sport Jet
    • 27-78690
    • 27-78690002
    2Relief Valve Plate Gasket N/A
    18-0952GLM
    • 32330
    Mercruiser Stern Drive
    • 27-88907003
    Mercury Marine
    • 27-88907
    • 27-88907003
    Mercury Sport Jet
    • 27-88907
    2Relief Valve Plate Gasket N/A
    18-2501GLM
    • 31680
    Mallory
    • 9-60060
    Mercury Marine
    • 27-67738
    • 27-93536
    • 27-935361
    1Reed Block Housing Gasket N/A
    18-2502GLM
    • 32150
    Mercury Marine
    • 27-87396
    • 27-90484
    • 27-904841
    Mercury Race Outboard
    • 27-90484
    • 27-904841
    2Divider Plate Gasket N/A
    18-2503GLM
    • 32530
    Mercury Marine
    • 27-78068
    • 27-99177
    • 27-991771
    • 27-991772
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2509GLM
    • 31690
    Mercury Marine
    • 27-67751
    3Carburetor Mounting Gasket N/A
    18-2510GLM
    • 32450
    Mercury Marine
    • 27-96761
    • 27-967611
    1Reed Block Housing Gasket N/A
    18-2511GLM
    • 32510
    Mercury Marine
    • 27-67074
    • 27-88727
    • 27-99173
    • 27-99173 2
    • 27-991731
    • 27-991734
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2513GLM
    • 30890
    Mallory
    • 9-60049
    • 9-60050
    Mercury Marine
    • 27-11338
    • 27-67208
    Mercury Sport Jet
    • 27-11338
    2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
    18-2803GLM
    • 32120
    Mercury Marine
    • 27-90430
    • 27-904301
    3Carburetor Mounting Gasket N/A
    18-2808GLM
    • 32440
    Mercury Marine
    • 27-96278
    Mercury Race Outboard
    • 27-96278
    2Cylinder Cover Gasket N/A
    18-2826GLM
    • 31040
    Mallory
    • 9-60036
    Mercruiser Stern Drive
    • 27-33146
    • 27-856704
    Mercury Marine
    • 27-33146
    • 27-85610
    • 27-856101
    1Water Pump Base Gasket N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-3110GLM
    • 12830
    Mallory
    • 9-43604
    Mercruiser Stern Drive
    • 26-38970
    Mercury Marine
    • 26-29677
    • 26-36557A1
    • 26-38970
    2Water Pump Housing Bushing N/A
    18-3862GLM
    • 35860
    Mallory
    • 9-63853
    Mercury Marine
    • 27-41246
    • 27-41246-1
    • 27-412462
    • 27-41247
    • 27-41247T01
    • 27-96543
    2Head Gasket N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7157GLM
    • 83410
    Mallory
    • 9-76542
    Mercruiser Stern Drive
    • 25-29976
    Mercury Marine
    • 25-29976
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercr iser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7162Chrysler/Force/US Marine
    • 25-33145
    GLM
    • 82260
    Johnson/Evinrude Outboard
    • 302337
    Mallory
    • 9-76547
    Mercruiser Stern Drive
    • 25-32424
    • 25-33145
    Mercury Marine
    • 25-33145
    Mercury Sport Jet
    • 25-33145
    OMC Stern Drive
    • 302337
    • 302377
    • 3852044
    Sears
    • 25-33145
    Volvo Penta
    • 3852044
    1O-Ring N/A
    18-7164GLM
    • 81260
    Johnson/Evinrude Outboard
    • 302537
    Mercruiser Stern Drive
    • 25-33466
    • 25-67675
    • 25-846356
    • 27-898101789
    Mercury Marine
    • 25-33466
    • 25-67675
    • 25-846356
    1O-Ring N/A
    18-7168GLM
    • 80120
    Johnson/Evinrude Outboard
    • 202893
    Mallory
    • 9-76550
    Mercruiser Stern Drive
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    Mercury Marine
    • 25-20587
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    OMC Stern Drive
    • 202893
    • 3852033
    Volvo Penta
    • 3852033
    4O-Ring N/A
    18-7174Chrysler/Force/US Marine
    • 25-45711
    • 25-F455342
    GLM
    • 81140
    Johnson/Evinrude Outboard
    • 326649
    • 553127
    Mallory
    • 9-76553
    Mercruiser Stern Drive
    • 25-45711
    Mercury Marine
    • 25-45711
    Mercury Sport Jet
    • 25-45711
    OMC Stern Drive
    • 326649
    • 553127
    • 910582
    2O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7406GLM
    • 80100
    OMC Stern Drive
    • 3852523
    • 911311
    Volvo Penta
    • 3852523
    1O-Ring N/A
    18-7411GLM
    • 81240
    Johnson/Evinrude Outboard
    • 321921
    Mercruiser Stern Drive
    • 25-35480
    • 25-8M2000816
    Mercury Marine
    • 25-35480
    • 25-47386
    1O-Ring N/A
    18-7421GLM
    • 80070
    Mercury Marine
    • 25-16524
    • 25-20415
    2O-Ring N/A
    18-7812GLM
    • 40360
    Mallory
    • 9-37751
    Mercury Marine
    • 66599A2
    • 89031A2
    1Fuel Pump Kit N/A
    18-2506-1Mallory
    • 9-60046
    Mercury Marine
    • 27-99176
    • 27-991762
    • 27-991763
    • 27-991764
    Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-2508-1GLM
    • 32540
    Mercury Marine
    • 27-96440
    • 27-99776
    • 27-997761
    2Exhaust Plate Gasket N/A
    9-76560Mercury Marine
    • 25-38099
    1O-RING N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    NSSMercury Marine
    • 27-672741
    1Gasket, Choke Plate to CarburetorNo ImageN/A

    Powerhead Gasket Set
    Your Price:
    $64.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4337

    Additional Details:

    • For: 45 Jet, 50Hp, 55Hp, 60Hp 3 cyl outboards

    Interchanges/Replaces

    GLM

    • 39730

    Mallory

    • 9-64207

    Mercury Marine

    • 27-812867A91
    • 27-812867A96
    • 27-812867A97

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    1Thermostat Gasket N/A
    18-0319Mercury Marine
    • 27-812865
    • 27-822420
    • 27-828553
    • 27-8M0000822
    1Powerhead Base Gasket N/A
    18-0345Chrysler/Force/US Marine
    • 27-822189
    GLM
    • 37490
    Mercury Marine
    • 27-822189
    1Water Pump Gasket N/A
    18-0622Chrysler/Force/US Marine
    • 27-19701
    GLM
    • 37470
    Mallory
    • 9-60027
    Mercury Marine
    • 27-19701
    • 27-197011
    • 27-8M0036675
    • 27-8M4502052
    1Lower Wear Plate Gasket N/A
    18-2566Chrysler/Force/US Marine
    • 27-817277
    GLM
    • 30290
    Mallory
    • 9-60023
    Mercruiser Stern Drive
    • 27-817277
    • 27-8172771
    Mercury Marine
    • 27-817277
    • 27-8172771
    1Impeller Gasket N/A
    18-2593Chrysler/Force/US Marine
    • 27-194541
    Mallory
    • 9-60026
    Mercury Marine
    • 27-19454
    • 27-194541
    1Water Pump Gasket N/A
    18-2719Mercury Marine
    • 27-812869
    1Induction Manifold Gasket N/A
    18-2721Mercury Marine
    • 27-827284
    1Thermostat Cover Gasket N/A
    18-2729GLM
    • 35090
    Mercury Marine
    • 27-8128672
    1Thermostat Cover Gasket N/A
    18-2749Mercury Marine
    • 27-812867
    • 27-8128671
    1Thermostat Cover Gasket N/A
    18-7152GLM
    • 82310
    Johnson/Evinrude Outboard
    • 307082
    Mercruiser Stern Drive
    • 25-20863
    Mercury Marine
    • 25-20863
    OMC Stern Drive
    • 307082
    1O-Ring N/A
    18-7173Chrysler/Force/US Marine
    • 25-30224
    GLM
    • 82250
    Johnson/Evinrude Outboard
    • 310327
    Mallory
    • 9-76501
    Mercruiser Stern Drive
    • 25-30224
    • 25-30224Q
    Mercury Marine
    • 25-27018
    • 25-30224
    • 25-30224Q
    OMC Stern Drive
    • 310327
    1O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    18-7950Chrysler/Force/US Marine
    • 25-45258
    1O-Ring N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    3Drain Screw Gasket N/A
    NSSMercury Marine
    • 43023
    1Seal, Water TubeNo ImageN/A
    NSSMercury Marine
    • 27-814446
    • 27-8144461
    3GasketNo ImageN/A
    NSSMercury Marine
    • 27-812868
    1Gasket, Reed BlockNo ImageN/A
    NSSMercury Marine
    • 27-812866
    • 27-8M0000820
    1GasketNo ImageN/A
    NSSMercury Marine
    • 25-93221
    • 25-93221002
    1Grommet, Water TubeNo ImageN/A
    NSSMercury Marine
    • 42941
    • 42941001
    1Seal, Water TubeNo ImageN/A
    9-60064Mercury Marine
    • 26-812889
    3SEAL N/A

    Powerhead Gasket Set
    Your Price:
    $81.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4336

    Additional Details:

    • For: 70, 80, 90HP 3 cyl outboards

    Interchanges/Replaces

    GLM

    • 39333

    Mallory

    • 9-64209

    Mercury Marine

    • 27-43004A86
    • 27-43004A90
    • 27-43004A99

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    1Thermostat Gasket N/A
    18-0320GLM
    • 32220
    Mallory
    • 9-60061
    Mercury Marine
    • 27-13937
    • 27-139372
    • 27-139374
    • 27-139376
    6Reed Block Gasket N/A
    18-0324GLM
    • 32770
    Mallory
    • 9-60048
    Mercury Marine
    • 27-15172
    • 27-15172-3
    • 27-151724
    • 27-93214
    3Carburetor to Manifold Gasket N/A
    18-0339GLM
    • 32820
    Mallory
    • 9-60004
    Mercury Marine
    • 27-43006 2
    • 27-430061
    • 27-430063
    • 27-430065
    • 27-430066
    • 27-430067
    • 27-430068
    1Thermostat Gasket N/A
    18-0341Chrysler/Force/US Marine
    • 27-430086
    GLM
    • 32840
    Mercury Marine
    • 27-43008
    • 27-430082
    • 27-430083
    • 27-430085
    • 27-430086
    1Exhaust Plate Gasket N/A
    18-0670GLM
    • 32830
    Mallory
    • 9-60043
    Mercury Marine
    • 27-43007
    • 27-430073
    • 27-430075
    1Powerhead Base Gasket N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-2563GLM
    • 30290
    Honda Outboard
    • 19232-ZW1-003
    Mallory
    • 9-60021
    Mercury Marine
    • 27-43034
    • 27-430341
    1Impeller Gasket N/A
    18-2564Chrysler/Force/US Marine
    • 27-430331
    GLM
    • 30090
    Honda Outboard
    • 19234-ZW1-003
    Mallory
    • 9-60020
    Mercruiser Stern Drive
    • 27-430331
    Mercury Marine
    • 27-43033
    • 27-430331
    1Impeller Gasket N/A
    18-2565Chrysler/Force/US Marine
    • 27-430472
    GLM
    • 30320
    Honda Outboard
    • 19242-ZW1-003
    Mallory
    • 9-60022
    Mercury Marine
    • 27-43047
    • 27-430471
    • 27-430472
    1Impeller Gasket N/A
    18-2566Chrysler/Force/US Marine
    • 27-817277
    GLM
    • 30290
    Mallory
    • 9-60023
    Mercruiser Stern Drive
    • 27-817277
    • 27-8172771
    Mercury Marine
    • 27-817277
    • 27-8172771
    1Impeller Gasket N/A
    18-2740GLM
    • 37660
    Mercury Marine
    • 27-430051
    • 27-430052
    • 27-430053
    • 27-430055
    • 27-430056
    • 27-430057
    1Cylinder Block Gasket N/A
    18-2741GLM
    • 37650
    Mercury Marine
    • 27-43004-7
    • 27-43004009
    • 27-430041
    • 27-430042
    • 27-430043
    • 27-430045
    2Exhaust Cover Plate Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    3Drain Screw Gasket N/A
    18-4261GLM
    • 31330
    Mallory
    • 9-78002
    Mercury Marine
    • 12-20262
    • 19643
    Mercury Race Outboard
    • 12-20262
    1Washer N/A
    18-7105GLM
    • 80180
    Johnson/Evinrude Outboard
    • 311338
    Mallory
    • 9-76506
    Mercruiser Stern Drive
    • 25-62705
    • 25-F748342
    Mercury Marine
    • 25-62705
    2O-Ring N/A
    18-7164GLM
    • 81260
    Johnson/Evinrude Outboard
    • 302537
    Mercruiser Stern Drive
    • 25-33466
    • 25-67675
    • 25-846356
    • 27-898101789
    Mercury Marine
    • 25-33466
    • 25-67675
    • 25-846356
    1O-Ring N/A
    18-7167Chrysler/Force/US Marine
    • 785-97386
    GLM
    • 82390
    Johnson/Evinrude Outboard
    • 310414
    Mallory
    • 9-76549
    Mercruiser Stern Drive
    • 25-861844
    • 785-97386
    Mercury Marine
    • 25-861844
    • 785-97386
    OMC Stern Drive
    • 310414
    1O-Ring N/A
    18-7198Chrysler/Force/US Marine
    • 25-45710
    GLM
    • 81270
    Honda Outboard
    • 91353-ZW1-003
    Mallory
    • 9-76504
    Mercruiser Stern Drive
    • 25-45710
    • 25-457101
    Mercury Marine
    • 25-45710
    • 25-457101
    OMC Stern Drive
    • 308626
    1O-Ring N/A
    18-7414GLM
    • 80330
    Mercury Marine
    • 25-62384
    • 25-64067
    • 25-823683
    Mercury Sport Jet
    • 25-823683
    1O-Ring N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    NSSMercury Marine
    • 25-858225
    1O-RingNo ImageN/A
    NSSMercury Marine
    • 25-93221
    1Grommet, Water TubeNo ImageN/A

    Powerhead Gasket Set
    Your Price:
    $112.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4339

    Additional Details:

    • For: V200EFI, and V220 outboards

    Interchanges/Replaces

    GLM

    • 39332

    Mallory

    • 9-64210

    Mercury Marine

    • 27-14697A87

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0135GLM
    • 32880
    Mercury Marine
    • 27-78246
    • 27-782461
    1Adapter Cover Gasket N/A
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    2Thermostat Gasket N/A
    18-0644GLM
    • 37530
    Mercury Marine
    • 27-146972
    Mercury Sport Jet
    • 27-146972
    1Reed Plate Gasket N/A
    18-0645GLM
    • 37540
    Mallory
    • 9-60056
    Mercury Marine
    • 27-167371
    Mercury Sport Jet
    • 27-167371
    1Adapter Plate Gasket N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-0860GLM
    • 81520
    Mercruiser Stern Drive
    • 25-62700
    Mercury Marine
    • 25-62700
    Mercury Sport Jet
    • 25-62700
    1O-Ring N/A
    18-0936GLM
    • 31990
    Mallory
    • 9-60057
    Mercury Marine
    • 27-67624
    • 27-78690
    • 27-78690002
    Mercury Sport Jet
    • 27-78690
    • 27-78690002
    2Relief Valve Plate Gasket N/A
    18-0952GLM
    • 32330
    Mercruiser Stern Drive
    • 27-88907003
    Mercury Marine
    • 27-88907
    • 27-88907003
    Mercury Sport Jet
    • 27-88907
    1Relief Valve Plate Gasket N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-2502GLM
    • 32150
    Mercury Marine
    • 27-87396
    • 27-90484
    • 27-904841
    Mercury Race Outboard
    • 27-90484
    • 27-904841
    2Divider Plate Gasket N/A
    18-2503GLM
    • 32530
    Mercury Marine
    • 27-78068
    • 27-99177
    • 27-991771
    • 27-991772
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2506-1Mallory
    • 9-60046
    Mercury Marine
    • 27-99176
    • 27-991762
    • 27-991763
    • 27-991764
    Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-2511GLM
    • 32510
    Mercury Marine
    • 27-67074
    • 27-88727
    • 27-99173
    • 27-99173 2
    • 27-991731
    • 27-991734
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-2513GLM
    • 30890
    Mallory
    • 9-60049
    • 9-60050
    Mercury Marine
    • 27-11338
    • 27-67208
    Mercury Sport Jet
    • 27-11338
    2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-3110GLM
    • 12830
    Mallory
    • 9-43604
    Mercruiser Stern Drive
    • 26-38970
    Mercury Marine
    • 26-29677
    • 26-36557A1
    • 26-38970
    2Water Pump Housing Bushing N/A
    18-3862GLM
    • 35860
    Mallory
    • 9-63853
    Mercury Marine
    • 27-41246
    • 27-41246-1
    • 27-412462
    • 27-41247
    • 27-41247T01
    • 27-96543
    2Head Gasket N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7164GLM
    • 81260
    Johnson/Evinrude Outboard
    • 302537
    Mercruiser Stern Drive
    • 25-33466
    • 25-67675
    • 25-846356
    • 27-898101789
    Mercury Marine
    • 25-33466
    • 25-67675
    • 25-846356
    1O-Ring N/A
    18-7174Chrysler/Force/US Marine
    • 25-45711
    • 25-F455342
    GLM
    • 81140
    Johnson/Evinrude Outboard
    • 326649
    • 553127
    Mallory
    • 9-76553
    Mercruiser Stern Drive
    • 25-45711
    Mercury Marine
    • 25-45711
    Mercury Sport Jet
    • 25-45711
    OMC Stern Drive
    • 326649
    • 553127
    • 910582
    2O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7421GLM
    • 80070
    Mercury Marine
    • 25-16524
    • 25-20415
    1O-Ring N/A
    18-7426GLM
    • 21330
    Mallory
    • 9-76562
    Mercruiser Stern Drive
    • 25-30271
    Mercury Marine
    • 25-30271
    Mercury Sport Jet
    • 25-30271
    1O-Ring N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    18-8305Mercury Marine
    • 26-814754
    • 42838
    • 69668
    • 88726
    Mercury Race Outboard
    • 428381
    • 69668
    Mercury Sport Jet
    • 26-814754
    1Divider Plate Seal N/A
    9-76560Mercury Marine
    • 25-38099
    1O-RING N/A

    Powerhead Gasket Set
    Your Price:
    $177.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4340

    Additional Details:

    • For: 80 Jet, 100Hp, 115Hp, & 125Hp 4 cyl outboards

    Interchanges/Replaces

    GLM

    • 39331

    Mallory

    • 9-64211

    Mercury Marine

    • 27-13461A88
    • 27-13461A89
    • 27-13461A90
    • 27-13461A99

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    1Thermostat Gasket N/A
    18-0320GLM
    • 32220
    Mallory
    • 9-60061
    Mercury Marine
    • 27-13937
    • 27-139372
    • 27-139374
    • 27-139376
    8Reed Block Gasket N/A
    18-0324GLM
    • 32770
    Mallory
    • 9-60048
    Mercury Marine
    • 27-15172
    • 27-15172-3
    • 27-151724
    • 27-93214
    8Carburetor to Manifold Gasket N/A
    18-0339GLM
    • 32820
    Mallory
    • 9-60004
    Mercury Marine
    • 27-43006 2
    • 27-430061
    • 27-430063
    • 27-430065
    • 27-430066
    • 27-430067
    • 27-430068
    1Thermostat Gasket N/A
    18-0341Chrysler/Force/US Marine
    • 27-430086
    GLM
    • 32840
    Mercury Marine
    • 27-43008
    • 27-430082
    • 27-430083
    • 27-430085
    • 27-430086
    1Exhaust Plate Gasket N/A
    18-0670GLM
    • 32830
    Mallory
    • 9-60043
    Mercury Marine
    • 27-43007
    • 27-430073
    • 27-430075
    1Powerhead Base Gasket N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-2563GLM
    • 30290
    Honda Outboard
    • 19232-ZW1-003
    Mallory
    • 9-60021
    Mercury Marine
    • 27-43034
    • 27-430341
    1Impeller Gasket N/A
    18-2564Chrysler/Force/US Marine
    • 27-430331
    GLM
    • 30090
    Honda Outboard
    • 19234-ZW1-003
    Mallory
    • 9-60020
    Mercruiser Stern Drive
    • 27-430331
    Mercury Marine
    • 27-43033
    • 27-430331
    1Impeller Gasket N/A
    18-2565Chrysler/Force/US Marine
    • 27-430472
    GLM
    • 30320
    Honda Outboard
    • 19242-ZW1-003
    Mallory
    • 9-60022
    Mercury Marine
    • 27-43047
    • 27-430471
    • 27-430472
    1Impeller Gasket N/A
    18-2566Chrysler/Force/US Marine
    • 27-817277
    GLM
    • 30290
    Mallory
    • 9-60023
    Mercruiser Stern Drive
    • 27-817277
    • 27-8172771
    Mercury Marine
    • 27-817277
    • 27-8172771
    1Impeller Gasket N/A
    18-2610GLM
    • 37690
    Mercury Marine
    • 27-812775
    • 27-812775-4
    • 27-812775A01
    1Outer Exhaust Plate Gasket N/A
    18-2611GLM
    • 37680
    Mercury Marine
    • 27-812775-5
    • 27-8127751
    • 27-812775A01
    1Inner Exhaust Plate Gasket N/A
    18-2621GLM
    • 37640
    Mercury Marine
    • 27-139581
    2Baffle Plate Gasket N/A
    18-2943GLM
    • 37670
    Mercury Marine
    • 27-443281
    • 27-443282
    • 27-443283
    • 27-443284
    1Cylinder Block Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    3Drain Screw Gasket N/A
    18-4261GLM
    • 31330
    Mallory
    • 9-78002
    Mercury Marine
    • 12-20262
    • 19643
    Mercury Race Outboard
    • 12-20262
    1Washer N/A
    18-7105GLM
    • 80180
    Johnson/Evinrude Outboard
    • 311338
    Mallory
    • 9-76506
    Mercruiser Stern Drive
    • 25-62705
    • 25-F748342
    Mercury Marine
    • 25-62705
    1O-Ring N/A
    18-7198Chrysler/Force/US Marine
    • 25-45710
    GLM
    • 81270
    Honda Outboard
    • 91353-ZW1-003
    Mallory
    • 9-76504
    Mercruiser Stern Drive
    • 25-45710
    • 25-457101
    Mercury Marine
    • 25-45710
    • 25-457101
    OMC Stern Drive
    • 308626
    1O-Ring N/A
    18-7414GLM
    • 80330
    Mercury Marine
    • 25-62384
    • 25-64067
    • 25-823683
    Mercury Sport Jet
    • 25-823683
    1O-Ring N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    18-7961Mallory
    • 9-76569
    Mercury Marine
    • 25-47254
    1O-Ring N/A
    18-2942GLM
    • 37630
    Mercury Marine
    • 27-134612
    2Gasket N/A
    NSSMercury Marine
    • 25-93221
    1GrommetNo ImageN/A
    NSSMercury Marine
    • 25-858225
    1O-RingNo ImageN/A
    NSSMercury Marine
    • 42941
    • 42941001
    1Seal, Water TubeNo ImageN/A

    Powerhead Gasket Set
    Your Price:
    $49.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4325

    Key Features:

    • Does not include head gasket

    Interchanges/Replaces

    GLM

    • 39337

    Mallory

    • 9-64214

    Mercury Marine

    • 27-85491A87
    • 27-85491A90

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-0103GLM
    • 30990
    Mercury Marine
    • 27-37725
    • 27-72496
    • 27-79650
    • 27-796501
    1Powerhead Base Gasket N/A
    18-0137GLM
    • 31790
    Mercury Marine
    • 27-46111
    • 27-72488
    • 27-85492
    • 27-85492-2
    • 27-854921
    • 27-854924
    1Baffle Plate Gasket N/A
    18-0539GLM
    • 85630
    Mercury Marine
    • 37721
    • 37721001
    1Exhaust Leg Rubber Seal N/A
    18-0870GLM
    • 30060
    Mallory
    • 9-60063
    Mercury Marine
    • 27-27936
    • 27-279361
    2Transfer Port Cover Gasket N/A
    18-0879GLM
    • 31400
    Mallory
    • 9-60042
    Mercury Marine
    • 27-37724
    • 27-38501
    • 27-385011
    1Adapter Plate Gasket N/A
    18-0938GLM
    • 31000
    Mercury Marine
    • 27-797971
    1Water Inlet Gasket N/A
    18-2800GLM
    • 31860
    Mercury Marine
    • 27-26891
    • 27-64659
    • 27-75791
    • 27-757911
    2Carburetor Mounting Gasket N/A
    18-2810GLM
    • 30260
    Mercury Marine
    • 27-43777
    • 27-437771
    • 27-437772
    • 27-96483
    1Block Cover Gasket N/A
    18-2823GLM
    • 31060
    Mallory
    • 9-60039
    Mercruiser Stern Drive
    • 27-32769
    Mercury Marine
    • 27-19553
    • 27-32769
    1Lower Water Pump Gasket N/A
    18-2825GLM
    • 31080
    Mallory
    • 9-60030
    Mercury Marine
    • 27-32771
    1Water Pump Base Gasket N/A
    18-7151GLM
    • 82340
    Mallory
    • 9-76540
    Mercruiser Stern Drive
    • 25-20081
    • 25-39572
    Mercury Marine
    • 25-20081
    • 25-39572
    2O-Ring N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7161GLM
    • 80420
    Mallory
    • 9-76546
    Mercruiser Stern Drive
    • 25-32546
    Mercury Marine
    • 25-32546
    2O-Ring N/A
    18-2824GLM
    • 31070
    Mallory
    • 9-60029
    Mercury Marine
    • 27-19551
    • 27-32770
    1Upper Water Pump Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    1Drain Screw Gasket N/A
    18-7166GLM
    • 80160
    Mercury Marine
    • 25-45254
    1O-Ring N/A
    18-0942GLM
    • 31780
    Mercury Marine
    • 27-46110
    • 27-72486
    • 27-85491
    • 27-85491-2
    • 27-854911
    • 27-854913
    1Baffle Plate Gasket N/A
    18-7115GLM
    • 82240
    Johnson/Evinrude Outboard
    • 302588
    Mercruiser Stern Drive
    • 25-20266
    • 25-26722
    Mercury Marine
    • 25-20266
    • 25-26722
    OMC Stern Drive
    • 302588
    1O-Ring N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    NSSMercury Marine
    • 26-38452
    2Seal, RubberNo ImageN/A

    Powerhead Gasket Set
    Your Price:
    $57.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4326

    Additional Details:

    • For: 50,55,60 HP 3 cyl.

    Interchanges/Replaces

    GLM

    • 39336

    Mallory

    • 9-64215

    Mercury Marine

    • 27-43779A87

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7161GLM
    • 80420
    Mallory
    • 9-76546
    Mercruiser Stern Drive
    • 25-32546
    Mercury Marine
    • 25-32546
    1O-Ring N/A
    18-7415GLM
    • 80440
    Mercruiser Stern Drive
    • 25-64966
    Mercury Marine
    • 25-64966
    1O-Ring N/A
    18-7413Chrysler/Force/US Marine
    • 25-62702
    • 25-F50342-1
    • F17510
    • F50342
    GLM
    • 80110
    Johnson/Evinrude Outboard
    • 303191
    Mercruiser Stern Drive
    • 25-62702
    • 25-627021
    Mercury Marine
    • 25-22175
    • 25-62702
    Mercury Sport Jet
    • 25-62702
    OMC Stern Drive
    • 303191
    1O-Ring N/A
    18-0879GLM
    • 31400
    Mallory
    • 9-60042
    Mercury Marine
    • 27-37724
    • 27-38501
    • 27-385011
    1Adapter Plate Gasket N/A
    18-2809GLM
    • 30270
    Mercury Marine
    • 27-43779
    • 27-437791
    • 27-437792
    • 27-96485
    1Block Cover Gasket N/A
    18-0918GLM
    • 30760
    Mallory
    • 9-60053
    Mercury Marine
    • 27-69524
    • 27-695241
    • 27-695242
    1Plate to Exhaust Manifold Gasket N/A
    18-0932GLM
    • 30940
    Mercury Marine
    • 27-76862
    • 27-768621
    1Transfer Passage Cover Gasket N/A
    18-0131GLM
    • 30770
    Mallory
    • 9-60052
    Mercury Marine
    • 27-64857
    • 27-69525
    • 27-695251
    • 27-695252
    1Baffle Plate Gasket N/A
    18-0539GLM
    • 85630
    Mercury Marine
    • 37721
    • 37721001
    1Exhaust Leg Rubber Seal N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-0922GLM
    • 30800
    Mercury Marine
    • 27-70335
    • 27-703351
    1Baffle Plate Gasket N/A
    18-2804GLM
    • 31810
    Mercury Marine
    • 27-73377
    • 27-733771
    2Carburetor Mounting Gasket N/A
    18-2823GLM
    • 31060
    Mallory
    • 9-60039
    Mercruiser Stern Drive
    • 27-32769
    Mercury Marine
    • 27-19553
    • 27-32769
    1Lower Water Pump Gasket N/A
    18-2841GLM
    • 31190
    Mallory
    • 9-60033
    Mercury Marine
    • 27-19552
    • 27-77417
    1Water Pump Base Gasket N/A
    18-2824GLM
    • 31070
    Mallory
    • 9-60029
    Mercury Marine
    • 27-19551
    • 27-32770
    1Upper Water Pump Gasket N/A
    18-7155Chrysler/Force/US Marine
    • 25-26855
    GLM
    • 82230
    Johnson/Evinrude Outboard
    • 305270
    Mallory
    • 9-76541
    Mercruiser Stern Drive
    • 25-26855
    Mercury Marine
    • 25-26855
    Yamaha Outboard
    • 93210-41MJ2-00
    1O-Ring N/A
    18-2512GLM
    • 30930
    Mercury Marine
    • 27-60286
    2Crankcase Gasket (Crankcase to Cyl. Block)(3 Cyl.) N/A
    18-0139GLM
    • 31980
    Mallory
    • 9-60059
    Mercury Marine
    • 27-76589
    • 27-78623
    • 27-88451
    • 27-884511
    1Powerhead Base Gasket N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-7160GLM
    • 83340
    Mallory
    • 9-76545
    Mercruiser Stern Drive
    • 25-31986
    Mercury Marine
    • 25-31986
    1O-Ring N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    NSSMercury Marine
    • 27-79797
    • 27-797971
    1Gasket, HousingNo ImageN/A
    NSSMercury Marine
    • 27-60280
    • 27-602801
    1Gasket, Exhaust TubeNo ImageN/A
    NSSMercury Marine
    • 26-38452
    1Seal, Water Inlet TubeNo ImageN/A
    NSSMercury Marine
    • 78712
    • 86304
    1Seal, SplinedNo ImageN/A
    NSSMercury Marine
    • 25-20273
    1O-Ring, Rubber (Drive Shaft)No ImageN/A

    Powerhead Gasket Set
    Your Price:
    $38.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Powerhead Gasket Set

    676-18-4338

    Additional Details:

    • For: V-135, V-150 DFI Outboards

    Interchanges/Replaces

    GLM

    • 39338

    Mallory

    • 9-64216

    Mercury Marine

    • 27-814754A00
    • 27-814754A98
    • 27-8M0046714

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2506-1Mallory
    • 9-60046
    Mercury Marine
    • 27-99176
    • 27-991762
    • 27-991763
    • 27-991764
    Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-0860GLM
    • 81520
    Mercruiser Stern Drive
    • 25-62700
    Mercury Marine
    • 25-62700
    Mercury Sport Jet
    • 25-62700
    1O-Ring N/A
    18-0858GLM
    • 81430
    Mallory
    • 9-76516
    Mercruiser Stern Drive
    • 25-54029
    Mercury Marine
    • 25-54029
    Mercury Sport Jet
    • 25-54029
    1O-Ring N/A
    18-0182GLM
    • 30610
    Johnson/Evinrude Outboard
    • 310058
    Mallory
    • 9-60002
    Mercury Marine
    • 27-62386
    • 27-62386001
    Mercury Race Outboard
    • 27-62386001
    2Thermostat Gasket N/A
    18-0642GLM
    • 37560
    Mallory
    • 9-60051
    Mercury Marine
    • 27-19050
    • 27-190502
    • 27-190503
    • 27-190505
    1Divider Plate Gasket N/A
    18-2735Mercury Marine
    • 27-190506
    Mercury Sport Jet
    • 27-190506
    1Divider Plate Gasket N/A
    18-0936GLM
    • 31990
    Mallory
    • 9-60057
    Mercury Marine
    • 27-67624
    • 27-78690
    • 27-78690002
    Mercury Sport Jet
    • 27-78690
    • 27-78690002
    2Relief Valve Plate Gasket N/A
    18-2511GLM
    • 32510
    Mercury Marine
    • 27-67074
    • 27-88727
    • 27-99173
    • 27-99173 2
    • 27-991731
    • 27-991734
    1Drive Shaft Housing to Exhaust Plate Gasket N/A
    18-0643GLM
    • 37570
    Mercury Marine
    • 27-183071
    • 27-183076
    1Powerhead Base Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7174Chrysler/Force/US Marine
    • 25-45711
    • 25-F455342
    GLM
    • 81140
    Johnson/Evinrude Outboard
    • 326649
    • 553127
    Mallory
    • 9-76553
    Mercruiser Stern Drive
    • 25-45711
    Mercury Marine
    • 25-45711
    Mercury Sport Jet
    • 25-45711
    OMC Stern Drive
    • 326649
    • 553127
    • 910582
    1O-Ring N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-0135GLM
    • 32880
    Mercury Marine
    • 27-78246
    • 27-782461
    1Adapter Cover Gasket N/A
    18-2514GLM
    • 30430
    Mercury Marine
    • 27-53650
    2Crankcase Gasket (Crankcase to Cyl. Block)(4 Cyl.) N/A

    Set, Gasket - Powerhead
    Your Price:
    $55.99

    Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

    Set, Gasket - Powerhead

    676-18-64221

    Interchanges/Replaces

    Mallory

    • 9-64221

    Mercury Marine

    • 27-835427A04

    Nissan/Tohatsu Outboard

    • 3V1-87121-0

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-60916Mallory
    • 9-60916
    Mercury Marine
    • 27-850836001
    Nissan/Tohatsu Outboard
    • 3V1-01005-0
    1Cylinder Head Gasket N/A
    18-60917Mallory
    • 9-60917
    Mercury Marine
    • 27-803508017
    Nissan/Tohatsu Outboard
    • 3V1-01024-0
    1Cylinder Cover Gasket N/A
    18-60918Mallory
    • 9-60918
    Mercury Marine
    • 27-835427003
    Nissan/Tohatsu Outboard
    • 3V1-01303-0
    1Engine Base Gasket N/A
    18-60919Mallory
    • 9-60919
    Mercury Marine
    • 27-834952001
    Nissan/Tohatsu Outboard
    • 3V1-02305-0
    1Exhaust Cover Gasket N/A
    18-60920Mallory
    • 9-60920
    Mercury Marine
    • 27-853702
    • 27-853702005
    • 27-898101194
    Nissan/Tohatsu Outboard
    • 346-01032-0
    1Thermostat Gasket N/A
    18-76689Mallory
    • 9-76689
    Yamaha Outboard
    • 65W-14198-00-00
    1O-Ring N/A
    18-76690Mallory
    • 9-76690
    Yamaha Outboard
    • 93210-46M16-00
    1O-Ring N/A