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Sierra 18-3979 Piston Rings
Sierra replacement piston rings for Mercury Marine Outboards.
- Bore Size: 3.375 / Standard
Interchangeable with:
- GLM
- 14910
- Mallory
- 9-54229
- Mercury Marine
- 39-96170A12
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Sierra 18-3979 Piston Rings
- Product MPN
- 18-3979
- Product UPC
- 808282124779
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