308776 OMC O-RING

OEM OMC Johnson/Evinrude O-ring (308776) is a precision retaining seal used in Johnson/Evinrude outboard engines rated 18-25HP from the 1960s and 1970s. This small elastomer seal prevents fluid leakage and maintains pressure in engine compartments, fuel systems, and transmission assemblies. Genuine OEM construction ensures chemical resistance and durability. Direct replacement 308776 restores original sealing performance on classic Johnson/Evinrude motors.