Serpentine Belt Idler Pulley – Fits MerCruiser V6 & V8 Engines (Replaces 865598, 818382, 8M6500024) 9.9-20HP and a smoother ride in

and a smoother ride in choppy water

tightening the bolts in a crisscross pattern to the manufacturer's torque specifications

serving as a direct-fit replacement for the original housing

heavy-duty rubber designed specifically to protect your boat's gelcoat and finish during loading and transport

This filter is designed for equipment using a 5/16" inline fuel filter

Serpentine Belt Idler Pulley – Fits MerCruiser V6 & V8 Engines (Replaces 865598, 818382, 8M6500024) 9.9-20HP and a smoother ride inProduct Details This high quality Serpentine Belt Idler Pulley is a direct fit replacement for various MerCruiser V6 and V8 engines (model years 19962025) equipped with serpentine belt systems. It is also compatible with select General Motors Vortec V6 and Small Block V8 engines. Engineered for reliability, this pulley ensures proper belt tension and smooth engine operation. It serves as a direct interchange for MerCruiser part numbers 865598, 818382,