Piston Ring Set 39-21665A12
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- This is an OEM part manufactured by Mercury Marine
- Flat rate shipping starting at $3.95
- 30 day return policy
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3 Product Reviews
Mercury 7.5 hp 1984
- Repair Difficulty
- Repair Time
- More than 4 hours
Problem fixed: Replace piston rings and water pump
Low compression from running hot, replaced rings and water pump.
mercury 7.5 hp ,1983y
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