Login
See us on:
Visit CP on Facebook Visit CP on Instagram Visit CP on YouTube
Is your boat in the gallery?
Image Gallery  
Instructions & Guides:
Instructions  
Find Parts by Mercury Model:
OEM Part Finder  
What's popular today?
Popular Items  
What are you looking for Today?

Need Help? Call Us:

1-800-225-9871

Outside the USA? Call 707-585-9871


Items Per Page:
6 Results (Viewing 1 - 6 of 6)
Upper Unit Seal Kit
Your Price:
$30.99

Upper Unit Seal Kit

676-18-2644

Additional Details:

  • For: Alpha I Gen II

Interchanges/Replaces

GLM

  • 87501

Mallory

  • 9-74302

Mercruiser Stern Drive

  • 26-88397A1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2003GLM
  • 85030
Mallory
  • 9-76102
Mercruiser Stern Drive
  • 26-32080
  • 26-36054
  • 26-68493
  • 26-823894
  • 26-823894B
1Oil Seal N/A
18-2056Chrysler/Force/US Marine
  • 26-66302
GLM
  • 85060
Mallory
  • 9-76130
Mercruiser Stern Drive
  • 26-37259
  • 26-89237
  • 26-96503
  • 26-965031
Mercury Marine
  • 26-56394
  • 26-66302
2Oil Seal N/A
18-2715GLM
  • 12930
Mallory
  • 9-78005
Mercruiser Stern Drive
  • 24-17997A1
1Check Valve Kit N/A
18-2944GLM
  • 85140
Mallory
  • 9-76512
Mercruiser Stern Drive
  • 26-45577
  • 26-455771
  • 26-45577B
  • 26-45577B1
1Seal Ring 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
18-3289Mercruiser Stern Drive
  • 26-864319
1Double Lip Seal N/A
18-7117GLM
  • 82150
Johnson/Evinrude Outboard
  • 303360
Mallory
  • 9-76507
Mercruiser Stern Drive
  • 25-35027
Mercury Marine
  • 25-35027
1O-Ring N/A
18-7161GLM
  • 80420
Mallory
  • 9-76546
Mercruiser Stern Drive
  • 25-32546
Mercury Marine
  • 25-32546
1O-Ring N/A
18-7169Chrysler/Force/US Marine
  • 25-F24278
GLM
  • 82380
Mallory
  • 9-76551
Mercruiser Stern Drive
  • 25-35984
  • 25-70937
OMC Stern Drive
  • 911686
1O-Ring N/A
18-7420GLM
  • 82110
Mallory
  • 9-76565
Mercruiser Stern Drive
  • 25-21836
Mercury Marine
  • 25-21836
Mercury Race Outboard
  • 25-21836
Mercury Race Sterndrive
  • 25-21836
Mercury Sport Jet
  • 25-21836
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
2O-Ring
18-2430Mallory
  • 9-60105
Mercruiser Stern Drive
  • 26-830749
Mercury Marine
  • 26-830749
1Drain Screw Gasket N/A
NSSMercruiser Stern Drive
  • 26-88397
1SealNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$462.99

Upper Unit Gear Repair Kit

676-18-6351K

Additional Details:

  • Ratio: 1.47:1
  • For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-803103T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-6351Mercruiser Stern Drive
  • 43-853641A2
1Upper Unit Gear Set N/A
18-1179GLM
  • 21511
Mallory
  • 9-75106
Mercruiser Stern Drive
  • 31-32575A1
  • 31-32575T1
Mercury Marine
  • 31-32575A1
  • 31-32575T1
1Tapered Roller Bearing N/A
18-1156Chrysler/Force/US Marine
  • 31-30894A1
GLM
  • 21820
Honda Outboard
  • 91051-ZW1-003
Mallory
  • 9-75118
Mercruiser Stern Drive
  • 31-30894A1
Mercury Marine
  • 31-30894A1
1Foward Gear Bearing N/A
18-3712GLM
  • 28330
Mallory
  • 9-78107
Mercruiser Stern Drive
  • 12-45810
1Carrier Nut Washer N/A
18-3713Chrysler/Force/US Marine
  • 11-F1920
  • F1348
  • F1881
GLM
  • 28360
Mallory
  • 9-78117
Mercruiser Stern Drive
  • 11-22339
  • 11-36084
  • 11-97522
Mercury Marine
  • 11-22339
1Lock Nut N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2282GLM
  • 23261
Mercruiser Stern Drive
  • 15-32563A1
Mercury Marine
  • 15-32563A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
NSSMercruiser Stern Drive
  • 25-853649
1Spacer, Bearing CupNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$478.99

Upper Unit Gear Repair Kit

676-18-6352K

Additional Details:

  • Ratios: 1.94:1 & 2.40:1
  • For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-803106T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-6352Mercruiser Stern Drive
  • 43-853642A2
1Upper Unit Gear Set N/A
18-1179GLM
  • 21511
Mallory
  • 9-75106
Mercruiser Stern Drive
  • 31-32575A1
  • 31-32575T1
Mercury Marine
  • 31-32575A1
  • 31-32575T1
1Tapered Roller Bearing N/A
18-1156Chrysler/Force/US Marine
  • 31-30894A1
GLM
  • 21820
Honda Outboard
  • 91051-ZW1-003
Mallory
  • 9-75118
Mercruiser Stern Drive
  • 31-30894A1
Mercury Marine
  • 31-30894A1
1Foward Gear Bearing N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-3712GLM
  • 28330
Mallory
  • 9-78107
Mercruiser Stern Drive
  • 12-45810
1Carrier Nut Washer N/A
18-3713Chrysler/Force/US Marine
  • 11-F1920
  • F1348
  • F1881
GLM
  • 28360
Mallory
  • 9-78117
Mercruiser Stern Drive
  • 11-22339
  • 11-36084
  • 11-97522
Mercury Marine
  • 11-22339
1Lock Nut N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2282GLM
  • 23261
Mercruiser Stern Drive
  • 15-32563A1
Mercury Marine
  • 15-32563A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
NSSMercruiser Stern Drive
  • 25-853649
1Spacer, Bearing CupNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$368.99

Upper Unit Gear Repair Kit

676-18-6353K

Additional Details:

  • Ratio: 1.81:1
  • For: Gen II (1998 & Up) (sn/ 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-803105T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2282GLM
  • 23261
Mercruiser Stern Drive
  • 15-32563A1
Mercury Marine
  • 15-32563A1
1Shim Set N/A
18-3712GLM
  • 28330
Mallory
  • 9-78107
Mercruiser Stern Drive
  • 12-45810
1Carrier Nut Washer N/A
18-3713Chrysler/Force/US Marine
  • 11-F1920
  • F1348
  • F1881
GLM
  • 28360
Mallory
  • 9-78117
Mercruiser Stern Drive
  • 11-22339
  • 11-36084
  • 11-97522
Mercury Marine
  • 11-22339
1Lock Nut N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1156Chrysler/Force/US Marine
  • 31-30894A1
GLM
  • 21820
Honda Outboard
  • 91051-ZW1-003
Mallory
  • 9-75118
Mercruiser Stern Drive
  • 31-30894A1
Mercury Marine
  • 31-30894A1
1Foward Gear Bearing N/A
18-6353GLM
  • 11238
Mercruiser Stern Drive
  • 43-853643A2
1Upper Gear Set N/A
18-1179GLM
  • 21511
Mallory
  • 9-75106
Mercruiser Stern Drive
  • 31-32575A1
  • 31-32575T1
Mercury Marine
  • 31-32575A1
  • 31-32575T1
1Tapered Roller Bearing N/A
NSSMercruiser Stern Drive
  • 23-853649
1Spacer, Bearing CupNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$593.99

Upper Unit Gear Repair Kit

676-18-2358

Additional Details:

  • Ratios: 1.50:1 (1.47:1)
  • Teeth: 20-22
  • For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

  • 11216

Mercruiser Stern Drive

  • 43-803102T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2201GLM
  • 11210
Mercruiser Stern Drive
  • 43-18410A2
  • 43-18411A2
  • 43-59832A2
  • 43-59832A4
1Upper Unit Gear Set N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
18-2840GLM
  • 31160
Mercruiser Stern Drive
  • 27-35982
1Bell Housing Gasket N/A
18-2743GLM
  • 31141
Mallory
  • 9-61012
Mercruiser Stern Drive
  • 27-94996
  • 27-949962
  • 27-94996A20
1Outdrive Mounting Gasket N/A
18-7170Chrysler/Force/US Marine
  • 25-33504
GLM
  • 82200
Johnson/Evinrude Outboard
  • 307239
Mallory
  • 9-76502
Mercruiser Stern Drive
  • 25-33504
Mercury Marine
  • 25-33504
OMC Stern Drive
  • 307239
  • 3852071
Volvo Penta
  • 3852071
1O-Ring N/A
18-7117GLM
  • 82150
Johnson/Evinrude Outboard
  • 303360
Mallory
  • 9-76507
Mercruiser Stern Drive
  • 25-35027
Mercury Marine
  • 25-35027
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
2O-Ring
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
18-2283GLM
  • 23260
Mercruiser Stern Drive
  • 15-45691A1
1Shim Set N/A
Upper Unit Gear Repair Kit
Your Price:
$493.99

Upper Unit Gear Repair Kit

676-18-2365

Additional Details:

  • Ratio: 1.84:1 & 1.81:1
  • Teeth: 17-19
  • For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

  • 11236

Mercruiser Stern Drive

  • 43-803120T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2283GLM
  • 23260
Mercruiser Stern Drive
  • 15-45691A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-2204GLM
  • 11230
Mercruiser Stern Drive
  • 43-75324A2
  • 43-75325A3
1Upper Unit Gear Set N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
18-2743GLM
  • 31141
Mallory
  • 9-61012
Mercruiser Stern Drive
  • 27-94996
  • 27-949962
  • 27-94996A20
1Outdrive Mounting Gasket N/A
18-7170Chrysler/Force/US Marine
  • 25-33504
GLM
  • 82200
Johnson/Evinrude Outboard
  • 307239
Mallory
  • 9-76502
Mercruiser Stern Drive
  • 25-33504
Mercury Marine
  • 25-33504
OMC Stern Drive
  • 307239
  • 3852071
Volvo Penta
  • 3852071
1O-Ring N/A
18-7117GLM
  • 82150
Johnson/Evinrude Outboard
  • 303360
Mallory
  • 9-76507
Mercruiser Stern Drive
  • 25-35027
Mercury Marine
  • 25-35027
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
2O-Ring
6 Results (Viewing 1 - 6 of 6)
Loading...