396377 OMC PISTON-RING SET

The 396377 is a standard size piston ring set for OMC Johnson/Evinrude outboard engines. The set comprises compression rings and oil control rings that seal the piston within the cylinder, maintaining pressure during combustion and regulating crankcase oil. Designed for 2-cylinder and 3-cylinder models across 20, 25, 30, 60, 65, 70, and 75 horsepower ratings. Also referenced as Sierra 18-3910, GLM 24240, Mallory 9-54412, and Wiseco 3000KD. High-quality materials ensure durability in marine service conditions.