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Description
Sierra 18-4258 MerCruiser Pipe Plug
Sierra stainless steel pipe plug with square drive. Note: Pipe sealant with Teflon is recommended for use on plug threads.
- Thread Size: 3/4" - 14 NPT
Use With:
- 18-1949 Manifold Spacer
- 18-1984 Manifold Spacer
- 56507 Loctite Pipe Sealant
Interchangeable with:
- Crusader
- 113186
- GLM
- 21892
- Mallory
- 9-41205
- Mercruiser Stern Drive
- 22-33198A1
- 22-41622
- 22-46754
- 22-33198
- Osco
- 1016012
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
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