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Description
Sierra 18-3902 Mercury Piston Rings
Sierra high-quality marine parts are designed to meet OEM specifications.
- Bore Size: 2.875 / STD
- For 3 ring pistons
Interchangeable with:
- Mallory
- 9-54217
- Mercury Marine
- 39-78816A12
- 39-45155A12
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
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