18-2628 Seal Kit for Mercury Mariner Force 3.9-9.8 HP | SeaSierra
18-2628 Seal Kit for Mercury Mariner Force 3.9-9.8 HP | SeaSierra is backordered and will ship as soon as it is back in stock.
7-Day Returns
7-Day Returns
We accept returns on most items for 7 days.
Speedy Delivery
Speedy Delivery
In-stock orders ship the next day, from the warehouse closest to you.
18-2628 Seal Kit for Mercury Mariner Force 3.9-9.8 HP | SeaSierra is backordered and will ship as soon as it is back in stock.
Product Details
- SKU: 182628
- Brand & Manufacturer: SeaSierra
- Category: Gearcase Seal Kit
- Part Type: Seal Kit for Outboard Lower Units
Compatibility
This gearcase seal kit is compatible with the following Mercury, Mariner, and Force outboard lower units:
- 3.9-9.8 HP: 1975-1986
Part Numbers and Replacements
- Replaces OEM Part Numbers: 26-77066A1
-
Interchangeable with:
- GLM 87574
- Mallory 9-74212
- Mercury Marine 26-77066A1
Kit Components
The package includes the following items:
- Sierra 18-0584 Oil Seal
- Sierra 18-2010 Oil Seal
- Sierra 18-2945 Drain Screw Gasket
- Sierra 18-4261 Washer
- Sierra 18-7116 O-Ring
- Sierra 18-7120 O-Ring
- Sierra 18-7156 O-Ring
- Sierra 18-7168 O-Ring
- Sierra 18-7171 O-Ring
- Sierra 18-7180 O-Ring
- Sierra 18-8308 Shift Shaft Oil Seal
- Sierra 18-8310 Water Pump Base Seal
- Sierra 18-0516 Oil Seal
- Three additional Seals
- One Bushing
Additional Information
- The product is designed specifically for Mercury engines.
- Each Sea Sierra product meets or exceeds the original equipment part it replaces.
- Ensure to check part numbers for proper fit.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

