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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:
$3.99 Drain Plug
676-18-2244
Additional Details:
- Thread Size: 3/8" or 9.5mm - 16
- For: MerCruiser I,R,MR,Alpha One,TR,TRS & all O/Bs with 3/8-16 non-magnetic gear lube fill or vent screws
Use With:
- 18-2945: Drain Screw Gasket
- 18-2945-9: Drain Screw Gasket (Priced Per Pkg of 2)
- 18-29451-9: Drain Screw Gasket (Priced Per Pkg of 50)
Interchanges/Replaces
Chrysler/Force/US Marine
- 10-79953
- 10-79953A2
- 10-F50109
- F40109
GLM
- 22420
Mallory
- 9-72650
Mercruiser Stern Drive
- 10-28634
- 10-28634A1
- 10-79953
- 10-79953A2
- 10-79953Q04
- 10-79953Q2
- 816610A1
- 816610A2
Mercury Marine
- 10-20259
- 10-28634
- 10-28634A1
- 10-79953
- 10-79953A2
- 10-79953Q04
- 10-79953Q2
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2945 | Chrysler/Force/US Marine
| 1 | Drain Screw Gasket | | N/A |
Your Price:
$6.99 Drain Plug Magnet
676-18-2375
Additional Details:
- Thread Size: 3/8" or 9.5mm - 16
- Note: Not to used on #1/R lower units
- Fits: Mercury/Mariner O/Bs of Japanese origin that use an 8x1.25 metric threaded screw
- Fits: Mercruiser I, R, MR, Alpha One, TR, TRS
Use With:
- 18-2945: Drain Screw Gasket
- 18-2945-9: Drain Screw Gasket (Priced Per Pkg of 2)
- 18-29451-9: Drain Screw Gasket (Priced Per Pkg of 50)
Interchanges/Replaces
Chrysler/Force/US Marine
- 22-67892
- 22-67892A1
GLM
- 21731
Mallory
- 9-72651
Mercruiser Stern Drive
- 10-14834
- 10-14834A1
- 22-67892
- 22-67892A06
- 22-67892A1
- 22-8M0058389
Mercury Marine
- 10-14834
- 10-14834A1
- 22-67892
- 22-67892A05
- 22-67892A06
- 22-67892A1
Sears
- 22-67892A1
Your Price:
$128.99 Drain Screw (Priced Per Pkg of 50)
676-18-22441-9
Key Features:
- Package of 50 without gasket
Additional Details:
- Thread Size: 3/8" or 9.5mm - 16
- For: MerCruiser I,R,MR,Alpha One,TR,TRS & all O/Bs with 3/8-16 non-magnetic gear lube fill or vent screws
Use With:
- 18-2945: Drain Screw Gasket
- 18-2945-9: Drain Screw Gasket (Priced Per Pkg of 2)
- 18-29451-9: Drain Screw Gasket (Priced Per Pkg of 50)
Interchanges/Replaces
Chrysler/Force/US Marine
- 10-79953
- 10-79953A2
- 10-F50109
- F40109
GLM
- 22420
Mallory
- 9-72650
Mercruiser Stern Drive
- 10-28634
- 10-28634A1
- 10-79953
- 10-79953A2
- 10-79953Q04
- 10-79953Q2
- 816610A1
- 816610A2
Mercury Marine
- 10-20259
- 10-28634
- 10-28634A1
- 10-79953
- 10-79953A2
- 10-79953Q04
- 10-79953Q2
Your Price:
$241.99 Drain Screw (Priced Per Pkg of 50)
676-18-23751-9
Additional Details:
- Thread Size: 3/8" or 9.5mm - 16
- Note: Not to used on #1/R lower units
- Fits: Mercury/Mariner O/Bs of Japanese origin that use an 8x1.25 metric threaded screw
- Fits: Mercruiser I, R, MR, Alpha One, TR, TRS
Use With:
- 18-2945: Drain Screw Gasket
- 18-2945-9: Drain Screw Gasket (Priced Per Pkg of 2)
- 18-29451-9: Drain Screw Gasket (Priced Per Pkg of 50)
Interchanges/Replaces
Chrysler/Force/US Marine
- 22-67892
- 22-67892A1
GLM
- 21731
Mallory
- 9-72651
Mercruiser Stern Drive
- 10-14834
- 10-14834A1
- 22-67892
- 22-67892A06
- 22-67892A1
- 22-8M0058389
Mercury Marine
- 10-14834
- 10-14834A1
- 22-67892
- 22-67892A05
- 22-67892A06
- 22-67892A1
Sears
- 22-67892A1
Your Price:
$43.99 Impeller Kit
676-18-3207
Interchanges/Replaces
GLM
- 12250
Mallory
- 9-48300
Mercury Marine
- 47-89983Q1
- 47-89983T2
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2823 | GLM
| 1 | Lower Water Pump Gasket |  | N/A |
| 18-2824 | GLM
| 1 | Upper Water Pump Gasket |  | N/A |
| 18-2825 | GLM
| 1 | Water Pump Base Gasket |  | N/A |
| 18-2841 | GLM
| 1 | Water Pump Base Gasket |  | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-2948 | GLM
| 1 | Rubber Washer |  | N/A |
| 18-3007 | GLM
| 1 | Impeller |  | N/A |
| 18-3107 | GLM
| 1 | Impeller Plate |  | N/A |
| 18-7155 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7174 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7115 | 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:
$67.99 Lower Unit Seal Kit
676-18-2626
Additional Details:
- Fits: Mercury/Mariner 100/115/125 hp 2-cycle O/B (0B209468 & newer) w/ either a 3 or 6 jaw reverse clutch
Interchanges/Replaces
Chrysler/Force/US Marine
- 26-43035A4
GLM
- 87590
Mallory
- 9-74200
Mercury Marine
- 26-43035A1
- 26-43035A2
- 26-43035A3
- 26-43035A4
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-0522 | Chrysler/Force/US Marine
| 1 | Drive Shaft Oil Seal |  | N/A |
| 18-0583 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2002 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2053 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2054 | 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 |
| 18-2565 | Chrysler/Force/US Marine
| 1 | Impeller Gasket |  | N/A |
| 18-2566 | Chrysler/Force/US Marine
| 1 | Impeller Gasket |  | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 3 | Drain Screw Gasket | | N/A |
| 18-4261 | GLM
| 1 | Washer |  | N/A |
| 18-7188 | Mallory
| 1 | O-Ring |  | N/A |
| 18-7198 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7961 | Mallory
| 1 | O-Ring |  | N/A |
| 18-0568-9 | Chrysler/Force/US Marine
| 1 | Insulator Bushing (Priced Per Pkg of 4) |  | N/A |
| NSS | Mercury Marine
| 1 | Water Tube Seal | No Image | N/A |
| NSS | Mercury Marine
| 1 | Water Tube Seal | 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:
$77.99 Lower Unit Seal Kit
676-18-2654
Interchanges/Replaces
GLM
- 87530
Mallory
- 9-74202
Mercury Marine
- 26-79831A1
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2008 | GLM
| 1 | Oil Seal |  | N/A |
| 18-2011 | GLM
| 1 | Oil Seal |  | N/A |
| 18-2048 | GLM
| 1 | Oil Seal |  | N/A |
| 18-2051 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2052 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-2054 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 18-2055 | GLM
| 1 | Oil Seal |  | N/A |
| 18-2823 | GLM
| 1 | Lower Water Pump Gasket | | N/A |
| 18-2824 | GLM
| 1 | Upper Water Pump Gasket | | N/A |
| 18-2825 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2841 | GLM
| 1 | Water Pump Base Gasket | | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-2948 | GLM
| 1 | Rubber Washer | | N/A |
| 18-7115 | GLM
| 1 | O-Ring | | N/A |
| 18-7153 | GLM
| 1 | O-Ring | | N/A |
| 18-7155 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-7160 | GLM
| 1 | O-Ring |  | N/A |
| 18-7174 | Chrysler/Force/US Marine
| 1 | O-Ring | | N/A |
| 18-2316 | GLM
| 1 | Washer | | N/A |
| NSS | Mercury Marine
| 1 | Seal | No Image | N/A |
Your Price:
$94.99 Lower Unit Seal Kit
676-18-2653
Interchanges/Replaces
GLM
- 87520
Mallory
- 9-74203
Mercury Marine
- 26-55682A1
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-2002 | Chrysler/Force/US Marine
| 2 | Oil Seal | | N/A |
| 18-2007 | GLM
| 1 | 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 |
| 18-2048 | GLM
| 1 | Oil Seal | | N/A |
| 18-2050 | Mallory
| 1 | Oil Seal |  | N/A |
| 18-2053 | Chrysler/Force/US Marine
| 1 | Oil Seal | | N/A |
| 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 |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-2948 | GLM
| 1 | Rubber Washer | | 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 |
| 18-7158 | GLM
| 1 | O-Ring | | N/A |
| 18-7159 | GLM
| 1 | O-Ring | | N/A |
| 18-7161 | 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 |
| 18-7426 | GLM
| 1 | O-Ring | | N/A |
| 18 2316 | GLM
| 1 | Washer | < href="/images/product/large/18-2316.JPG" data-title="18-2316 Washer"> | N/A |
| 18-2340 | GLM
| 1 | Shift Shaft Washer | | N/A |
| NSS | Mercury Marine
| 1 | Exhaust Seal | No Image | N/A |
Your Price:
$77.99 Lower Unit Seal Kit
676-18-2624
Interchanges/Replaces
Chrysler/Force/US Marine
- 26-85090A2
GLM
- 87808
Mallory
- 9-74205
Mercury Marine
- 26-85090A2
Sears
- 26-85090A2
List of Containing Parts
| Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
|---|---|---|---|---|---|
| 18-0579 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-0580 | Chrysler/Force/US Marine
| 1 | Oil Seal |  | N/A |
| 18-0586 | Chrysler/Force/US Marine
| 2 | Oil Seal |  | N/A |
| 18-2560 | Chrysler/Force/US Marine
| 2 | Impeller Washer Gasket |  | N/A |
| 18-2562 | Chrysler/Force/US Marine
| 1 | Impeller Gasket |  | N/A |
| 18-2742 | Chrysler/Force/US Marine
| 1 | Shift Shaft Boot |  | N/A |
| 18-2945 | Chrysler/Force/US Marine
| 2 | Drain Screw Gasket | | N/A |
| 18-7100 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7135 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7188 | Mallory
| 2 | O-Ring | | N/A |
| 18-7419 | Chrysler/Force/US Marine
| 1 | O-Ring |  | N/A |
| 18-7956 | Chrysler/Force/US Marine
| 1 | O-Ring (Pkg. of 5) |  | N/A |
| 9-43634 | Mercury Marine
| 1 | SLINGER GASKET |  | N/A |
| NSS | Mercury Marine
| 1 | O-Ring | No Image | N/A |
| NSS | Mercury Marine
| 4 | Bushing | No Image | N/A |
| NSS | Mercury Marine
| 1 | Water Tube Seal | No Image | N/A |