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Your Price:
$165.99 Complete Lower Gearcase Rebuild Kit
676-18-8370
Key Features:
- Includes Water Pump and Complete Seal Kit
Additional Details:
- For:: Mercruiser R/MR/Alpha I
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket |  | N/A |
| 18-2340 | GLM
| 1 | Shift Shaft Washer |  | N/A |
| 18-2076 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-7159 | GLM
| 1 | O-Ring |  | N/A |
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-3109 | GLM
| 1 | Water Tube Guide |  | N/A |
| 18-2154 | GLM
| 1 | Shift Shaft Housing Bushing |  | N/A |
| 18-3116 | GLM
| 1 | Water Pump Housing |  | N/A |
| 18-3017 | Chrysler/Force/US Marine
| 1 | Impeller |  | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket |  | N/A |
| 18-7158 | GLM
| 1 | O-Ring |  | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket |  | N/A |
| 18-7173 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-2826 | GLM
| 1 | Water Pump Base Gasket |  | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket |  | N/A |
| 18-3117 | GLM
| 1 | Impeller Plate |  | N/A |
| 18-7162 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket |  | N/A |
| 18-2801 | GLM
| 1 | Water Pump Gasket |  | N/A |
| 18-7426 | GLM
| 1 | O-Ring |  | N/A |
| 18-2013 | GLM
| 1 | Oil Seal |  | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2009 | GLM
| 1 | Oil Seal |  | N/A |
| 18-7153 | GLM
| 1 | O-Ring |  | N/A |
Your Price:
$59.99 Impeller
676-18-30778
Interchanges/Replaces
Volvo Penta
- 21213664
- 22307636
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7130 | GLM
| 1 | O-Ring |  | N/A |
Your Price:
$30.99 Impeller Kit
676-18-3217
Additional Details:
- For:: #1 Units thru S/N D494569
- Type: Similar to 18-3314, 18-3316, 18-3319 without base or housing
Interchanges/Replaces
GLM
- 12290
Mallory
- 9-48304
Mercruiser Stern Drive
- 46-96148A8
Mercury Marine
- 46-32437A1
- 46-32437A3
- 46-37433A1
- 46-42579A4
- 46-44292A4
- 46-44579A4
- 46-48747A3
- 46-57234A3
- 46-58618A4
- 46-60367A1
- 46-60367A4
- 46-64141A11
- 46-69222A3
- 46-73803A3
- 46-73804A3
- 46-78400A2
- 46-9614888
- 46-96148A5
- 46-96148A8
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2801 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2826 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-3017 | Chrysler/Force/US Marine
| 1 | Impeller | | N/A |
| 18-3109 | GLM
| 1 | Water Tube Guide | | N/A |
| 18-3110 | GLM
| 1 | Water Pump Housing Bushing |  | N/A |
| 18-3117 | GLM
| 1 | Impeller Plate | | N/A |
| 18-7158 | GLM
| 1 | O-Ring | | N/A |
| 18-7162 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7173 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| NSS | Mercury Marine
| 1 | O-Ring | No Image | N/A |
Your Price:
$63.99 Lower Unit Seal Kit
676-18-2655
Additional Details:
- Fits: Mercury/Mariner 135/150 V-6 (0A904646 & Newer) and 175/200 V-6 (6618751 & Newer)
Interchanges/Replaces
GLM
- 87540
Mallory
- 9-74201
Mercury Marine
- 26-89238A2
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2002 | Chrysler/Force/US Marine
| 2 | Oil Seal | | N/A |
| 18-2009 | GLM
| 1 | Oil Seal | | N/A |
| 18-2013 | GLM
| 1 | Oil Seal | | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2155 | GLM
| 1 | Shift Shaft Housing Bushing |  | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-3110 | GLM
| 1 | Water Pump Housing Bushing | | N/A |
| 18-7153 | GLM
| 1 | O-Ring | | N/A |
| 18-7157 | GLM
| 1 | O-Ring |  | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| 18-2316 | GLM
| 1 | Washer |  | N/A |
| NSS | Mercury Marine
| 1 | Exhaust Seal | No Image | N/A |
Your Price:
$51.99 Lower Unit Seal Kit
676-18-2646-1
Additional Details:
- For: Alpha One Gen II
Interchanges/Replaces
GLM
- 87511
Mallory
- 9-74206
Mercruiser Stern Drive
- 26-816575A1
- 26-816575A3
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2013 | GLM
| 1 | Oil Seal | | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2076 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2077 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2564 | Chrysler/Force/US Marine
| 1 | Impeller Gasket |  | N/A |
| 18-2566 | Chrysler/Force/US Marine
| 1 | Impeller Gasket |  | N/A |
| 18-2599 | GLM
| 1 | Face Seal and Tool |  | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 1 | Drain Screw Gasket | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7168 | GLM
| 2 | O-Ring |  | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7413 | Chrysler/Force/US Marine
| 2 | O-Ring |  | N/A |
| 18-7420 | GLM
| 2 | O-Ring |  | N/A |
| 18-7440-1 | GLM
| 2 | O-Ring |  | N/A |
| 18-2009 | GLM
| 1 | Oil Seal | | N/A |
| 18-2430 | Mallory
| 1 | Drain Screw Gasket |  | N/A |
| 18-2056 | Chrysler/Force/US Marine
| 2 | Oil Seal |  |
Your Price:
$86.99 Lower Unit Seal Kit
676-18-2640
Interchanges/Replaces
Chrysler/Force/US Marine
- FK1203
- FK1203-1
GLM
- 87807
Mallory
- 9-74207
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-0500 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2076 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2077 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 3 | Drain Screw Gasket | | N/A |
| 18-7127 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7169 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7413 | Chrysler/Force/US Marine
| 4 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| NSS | Chrysler/Force/US Marine
| 2 | Oil Seal | No Image | N/A |
| 18-7141 | GLM
| 1 | O-Ring |  | N/A |
| NSS | Chrysler/Force/US Marine
| 1 | Oil Seal | No Image | N/A |
Your Price:
$36.99 Lower Unit Seal Kit
676-18-8382
Additional Details:
- For: 225Hp EFI/250Hp EFI (G129222 & Up), 200Hp (T801000 & Up), 200Hp Optimax DFI (G386496 & Up)
- For: 225Hp Optimax DFI (G590000-G960499), 225Hp (D280813-G437999), Models w/ "C-3 Casting"
Interchanges/Replaces
Mallory
- 9-74208
Mercury Marine
- 26-816575A4
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-8347 | Chrysler/Force/US Marine
| 1 | Shift Shaft Seal |  | N/A |
| 18-2056 | Chrysler/Force/US Marine
| 2 | Oil Seal | | N/A |
| 18-2564 | Chrysler/Force/US Marine
| 1 | Impeller Gasket | | N/A |
| 18-2566 | Chrysler/Force/US Marine
| 1 | Impeller Gasket | | N/A |
| 18-7420 | GLM
| 1 | O-Ring | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-2077 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-0649 | Mercury Marine
| 1 | Shift Housing Gasket |  | N/A |
| 18-7117 | GLM
| 1 | O-Ring |  | N/A |
| 18-7440-1 | GLM
| 2 | O-Ring | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-2599 | GLM
| 1 | Face Seal and Tool | | N/A |
Your Price:
$42.99 Lower Unit Seal Kit
676-18-2642
Interchanges/Replaces
GLM
- 87513
Mallory
- 9-74209
Mercury Marine
- 26-816575A5
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2013 | GLM
| 1 | Oil Seal | | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2563 | GLM
| 1 | Impeller Gasket |  | N/A |
| 18-2564 | Chrysler/Force/US Marine
| 1 | Impeller Gasket | | N/A |
| 18-2599 | GLM
| 1 | Face Seal and Tool | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7420 | GLM
| 2 | O-Ring | | N/A |
| 18-7440-1 | GLM
| 2 | O-Ring | | N/A |
| 18-2054 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2077 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
Your Price:
$59.99 Lower Unit Seal Kit
676-18-2652
Additional Details:
- For: IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & SS
Interchanges/Replaces
GLM
- 87510
Mallory
- 9-74304
Mercruiser Stern Drive
- 26-33144A1
- 26-33144A2
- 26-89238A1
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2013 | GLM
| 2 | Oil Seal | | N/A |
| 18-2014 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2076 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2154 | GLM
| 1 | Shift Shaft Housing Bushing | | N/A |
| 18-2826 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-2948 | GLM
| 1 | Rubber Washer |  | N/A |
| 18-7158 | GLM
| 1 | O-Ring | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7162 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| 18-2340 | GLM
| 1 | Shift Shaft Washer | | N/A |
| NSS | Mercruiser Stern Drive
| 1 | Gasket, Gear Housing Flushing Screw | No Image | N/A |
| 18-7153 | GLM
| 1 | O-Ring | | N/A |
| 18-2009 | GLM
| 1 | Oil Seal | | N/A |
Your Price:
$157.99 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 |
|---|---|---|---|---|---|
| 18-0135 | GLM
| 2 | Adapter Cover Gasket |  | N/A |
| 18-0182 | GLM
| 2 | Thermostat Gasket |  | N/A |
| 18-0384 | GLM
| 3 | Carburetor Gasket |  | N/A |
| 18-0641 | GLM
| 3 | Carburetor Mounting Gasket |  | N/A |
| 18-0642 | GLM
| 1 | Divider Plate Gasket |  | N/A |
| 18-0643 | GLM
| 1 | Powerhead Base Gasket |  | N/A |
| 18-0644 | GLM
| 1 | Reed Plate Gasket |  | N/A |
| 18-0645 | GLM
| 1 | Adapter Plate Gasket |  | N/A |
| 18-0646 | GLM
| 1 | Reed Plate Gasket |  | N/A |
| 18-0838 | Yamaha Outboard
| 1 | O-Ring |  | N/A |
| 18-0858 | GLM
| 1 | O-Ring |  | N/A |
| 18-0860 | GLM
| 1 | O-Ring |  | N/A |
| 18-0936 | GLM
| 2 | Relief Valve Plate Gasket |  | N/A |
| 18-2509 | GLM
| 3 | Carburetor Mounting Gasket |  | N/A |
| 18-2511 | GLM
| 1 | Drive Shaft Housing to Exhaust Plate Gasket |  | N/A |
| 18-2513 | GLM
| 2 | Crankcase Gasket (Cyl. Block Sealing V-6) |  | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-3110 | GLM
| 2 | Water Pump Housing Bushing | | N/A |
| 18-7153 | GLM
| 1 | O-Ring | | N/A |
| 18-7157 | GLM
| 1 | O-Ring | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7174 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-8305 | Mercury Marine
| 1 | Divider Plate Seal |  | N/A |
| 18-2506-1 | Mallory
| 1 | Exhaust Plate Gasket |  | N/A |
| 18-0970 | Chrysler/Force/US Marine
| 1 | Fuel Pump Base Gasket |  | N/A |
| 18-7817 | Chrysler/Force/US Marine
| 1 | Fuel Pump Kit |  | N/A |
Your Price:
$63.99 Water Pump Kit
676-18-3317
Additional Details:
- For:: # 1/R Units without flush S/N 2763442-6854392
Interchanges/Replaces
GLM
- 12110
Mallory
- 9-48305
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2801 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2826 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-3017 | Chrysler/Force/US Marine
| 1 | Impeller | | N/A |
| 18-3109 | GLM
| 1 | Water Tube Guide | | N/A |
| 18-3110 | GLM
| 1 | Water Pump Housing Bushing | | N/A |
| 18-3116 | GLM
| 1 | Water Pump Housing | | N/A |
| 18-3117 | GLM
| 1 | Impeller Plate | | N/A |
| 18-3417 | GLM
| 1 | Water Pump Base |  | N/A |
| 18-7158 | GLM
| 1 | O-Ring | | N/A |
| 18-7162 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7173 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| NSS | Mercruiser Stern Drive
| 1 | O-Ring | No Image | N/A |
Your Price:
$64.99 Water Pump Kit
676-18-3319
Key Features:
- Same as 18-3316 except base. Includes Water Pump Base (46-8M0077147) 18-3419
Interchanges/Replaces
Mallory
- 9-48306
Mercruiser Stern Drive
- 46-32437A3
- 46-37433A1
- 96-96148A8
Mercury Marine
- 46-32437A1
- 46-37433A1
- 46-42579A4
- 46-44292A4
- 46-48747A3
- 46-57234A3
- 46-58618A4
- 46-60367A1
- 46-60367A4
- 46-64141A11
- 46-69222A3
- 46-73802A3
- 46-73804A3
- 46-78400A2
- 46-96148A5
- 46-96148A8
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2801 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2826 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2914 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2915 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2919 | GLM
| 1 | Water Pump Gasket | | N/A |
| 18-2944 | GLM
| 1 | Seal Ring Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-3017 | Chrysler/Force/US Marine
| 1 | Impeller | | N/A |
| 18-3109 | GLM
| 1 | Water Tube Guide | | N/A |
| 18-3116 | GLM
| 1 | Water Pump Housing | | N/A |
| 18-3117 | GLM
| 1 | Impeller Plate | | N/A |
| 18-3419 | GLM
| 1 | Water Pump Base |  | N/A |
| 18-7158 | GLM
| 1 | O-Ring | | N/A |
| 18-7162 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7173 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7176 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| NSS | Mercury Marine
| 1 | O-Ring | No Image | N/A |