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The Sierra 18-2945-9 Marine Drain Screw Gasket pack includes two stainless steel gaskets designed for 3/8-16 drain/fill screws used in MerCruiser, Mercury/Mariner outboards, and most lower units and sea water pumps. Engineered for a precise fit and corrosion resistance, these gaskets meet or exceed OEM standards, ensuring reliable, leak-free performance in demanding marine environments.
| ASIN | B000N9M48O |
| Best Sellers Rank | #520,468 in Automotive ( See Top 100 in Automotive ) #903 in Powersports Engine Gaskets |
| Brand | Sierra |
| Color | Original Version |
| Compatible Groove Diameter | 0.38 inches |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,260) |
| EU Spare Part Availability Duration | 10 years |
| Exterior Finish | Stainless Steel |
| Fastener Size | 3/8-16 |
| Fastener Type | Drain Screw |
| Finish Types | Machined |
| Global Trade Identification Number | 00808282164324 |
| Grade Rating | Stainless Steel |
| Included Components | Sierra 18-2945-9 Drain Screw Gasket - Pack of 2 |
| Item Dimensions | 4 x 4 x 1 inches |
| Item Type Name | Sierra 18-2945-9 Drain Screw Gasket - Pack of 2 |
| Item Weight | 4.54 g |
| Manufacturer | Sierra |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | 18-2945-9 |
| Number Of Items | 1 |
| Number of Pieces | 2 |
| Outside Diameter | 4 inches |
| Part Number | 18-2945-9 |
| Set Name | 2 |
| Size Name | 4 inches |
| Thread Size | 16 |
| UPC | 808282164324 |
| Unit Count | 1 Count |
| Warranty Description | 90 days |
| Washer Application | marine |
| Washer Compatibility | 3/8-16 screws |
| Washer Type | Fender |
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