Sierra Item # | OE/Competitor # | Quantity | Description | Image | Comments |
18-0103 | GLM Mercury Marine
- 27-37725
- 27-72496
- 27-79650
- 27-796501
| 2 | Powerhead Base Gasket | ![](/images/product/icon/18-0103.JPG) | N/A |
18-0137 | GLM Mercury Marine
- 27-46111
- 27-72488
- 27-85492
- 27-85492-2
- 27-854921
- 27-854924
| 1 | Baffle Plate Gasket | ![](/images/product/icon/18-0137.JPG) | N/A |
18-0870 | GLM Mallory Mercury Marine
| 2 | Transfer Port Cover Gasket | ![](/images/product/icon/18-0870.JPG) | N/A |
18-0879 | GLM Mallory Mercury Marine
- 27-37724
- 27-38501
- 27-385011
| 1 | Adapter Plate Gasket | ![](/images/product/icon/18-0879.JPG) | N/A |
18-0938 | GLM Mercury Marine
| 1 | Water Inlet Gasket | ![](/images/product/icon/18-0938.jpg) | N/A |
18-0942 | GLM Mercury Marine
- 27-46110
- 27-72486
- 27-85491
- 27-85491-2
- 27-854911
- 27-854913
| 1 | Baffle Plate Gasket | ![](/images/product/icon/18-0942.JPG) | N/A |
18-2507 | GLM Mercury Marine
- 27-37816
- 27-72487
- 27-78026
- 27-85487
| 1 | Cylinder Block Cover Gasket | ![](/images/product/icon/18-2507.JPG) | N/A |
18-2571 | GLM Mercury Marine
| 2 | Carburetor Flange Gasket | ![](/images/product/icon/18-2571.JPG) | N/A |
18-2800 | GLM Mercury Marine
- 27-26891
- 27-64659
- 27-75791
- 27-757911
| 2 | Carburetor Mounting Gasket | ![](/images/product/icon/18-2800.JPG) | N/A |
18-2810 | GLM Mercury Marine
- 27-43777
- 27-437771
- 27-437772
- 27-96483
| 1 | Block Cover Gasket | ![](/images/product/icon/18-2810.JPG) | N/A |
18-2823 | GLM Mallory Mercruiser Stern Drive Mercury Marine
| 1 | Lower Water Pump Gasket | ![](/images/product/icon/18-2823.JPG) | N/A |
18-2824 | GLM Mallory Mercury Marine
| 1 | Upper Water Pump Gasket | ![](/images/product/icon/18-2824.JPG) | N/A |
18-2825 | GLM Mallory Mercury Marine
| 1 | Water Pump Base Gasket | ![](/images/product/icon/18-2825.JPG) | N/A |
18-2841 | GLM Mallory Mercury Marine
| 1 | Water Pump Base Gasket | ![](/images/product/icon/18-2841.JPG) | N/A |
18-7115 | GLM Johnson/Evinrude Outboard Mercruiser Stern Drive Mercury Marine OMC Stern Drive
| 1 | O-Ring | ![](/images/product/icon/18-7115.JPG) | N/A |
18-7151 | GLM Mallory Mercruiser Stern Drive Mercury Marine
| 2 | O-Ring | ![](/images/product/icon/18-7151.JPG) | N/A |
18-7153 | GLM Mallory Mercruiser Stern Drive Mercury Marine Mercury Race Outboard Mercury Race Sterndrive OMC Stern Drive Volvo Penta
| 1 | O-Ring | ![](/images/product/icon/18-7153.JPG) | N/A |
18-7155 | Chrysler/Force/US Marine GLM Johnson/Evinrude Outboard Mallory Mercruiser Stern Drive Mercury Marine Yamaha Outboard
| 1 | O-Ring | ![](/images/product/icon/18-7155.JPG) | N/A |
18-7160 | GLM Mallory Mercruiser Stern Drive Mercury Marine
| 1 | O-Ring | ![](/images/product/icon/18-7160.JPG) | N/A |
18-7413 | Chrysler/Force/US Marine
- 25-62702
- 25-F50342-1
- F17510
- F50342
GLM Johnson/Evinrude Outboard Mercruiser Stern Drive Mercury Marine Mercury Sport Jet OMC Stern Drive
| 2 | O-Ring | ![](/images/product/icon/18-7413.JPG) | N/A |
18-7421 | GLM Mercury Marine
| 1 | O-Ring | ![](/images/product/icon/18-7421.JPG) | N/A |
18-7804 | GLM Mercury Marine
| 1 | Fuel Pump Kit | ![](/images/product/icon/18-7804.JPG) | N/A |
18-7174 | Chrysler/Force/US Marine GLM Johnson/Evinrude Outboard Mallory Mercruiser Stern Drive Mercury Marine Mercury Sport Jet OMC Stern Drive
| 1 | O-Ring | ![](/images/product/icon/18-7174.JPG) | N/A |
NSS | Mercury Marine
| 1 | Gasket, Magneto Cover | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, Adapter to Primary Housing | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, Adapter to Primary Housing | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, Distributor Cap to Adaptor | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, Ignition Driver Cover | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, Ignition Driver Cap | No Image | N/A |
NSS | Mercury Marine
| 1 | Gasket, End Cap Cover | No Image | N/A |
NSS | Mercury Marine
| 1 | Seal | No Image | N/A |