Closed Riser Gasket – Fits MerCruiser GM V6 & V8 5.0L-8.2L (Replaces 27-8637251, 27-860231) 4.4HP pay close attention to the

pay close attention to the serial number ranges to ensure correct fitment

and 60 HP four-stroke models

18-3150-1)

Locate and remove the old lower exhaust bellow by loosening its clamps

Insert the new filter element

Closed Riser Gasket – Fits MerCruiser GM V6 & V8 5.0L-8.2L (Replaces 27-8637251, 27-860231) 4.4HP pay close attention to theProduct Details This Closed Riser Gasket is engineered for MerCruiser stern drives with GM V6 and V8 engines (5. 0L to 8. 2L, 305 502 CID) used in fresh water cooling systems. It is broadly compatible with models manufactured from approximately 1981 through the early 2000s, providing a reliable seal for closed riser connections. This part serves as a direct cross reference for Mercury MerCruiser, Sierra, GLM, OSCO, Mallory, and Barr part numbers,