39-21665A12 piston ring set is an OEM-spec ring kit for small-cylinder Mercury outboards (3.5–9.8 HP). It delivers the correct piston-to-cylinder wall seal, restoring compression...
39-21665A12 – Piston Ring Set – Mercury
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Outboard Engine
39-96170A4 – Piston Ring Set – Mercury
39-96170A4 piston ring set delivers a high-quality replacement ring set designed for Mercury outboard engines. These rings restore compression, reduce blow-by, and help return...
93210-53679 Yamaha O-Ring
93210-53679 Yamaha O-Ring