Gearcase Oil Seal – Fits OMC (Replaces 18-2028, 318973, 321480) 4-250HP Notes Mercury/Mariner Compatible Models 2-Stroke

Notes Mercury/Mariner Compatible Models 2-Stroke 879054A1 Limited cross-reference information available

GS Various 4-Stroke 1986–1998 3852696 Including 7

Securely refasten the thermostat cover

Cycle the trim/tilt system several times to ensure smooth operation and check for leaks

ensuring you have everything needed for a leak-free replacement

Gearcase Oil Seal – Fits OMC (Replaces 18-2028, 318973, 321480) 4-250HP Notes Mercury/Mariner Compatible Models 2-StrokeProduct Details This Gearcase Oil Seal Fits OMC (Replaces 18 2028, 318973, 321480) is designed as a direct fit replacement for OMC marine engines requiring a reliable gearcase seal. Engineered to prevent fluid leaks and protect lower unit integrity, this seal ensures consistent performance across a range of OMC applications. This aftermarket component directly replaces Sierra 18 2028, GLM 86170, OMC 318973, OMC 321480, OMC 0777541, and Mallory 9