Pulley Idler for Serpentine Belt Mercruiser V6 V8 3 Inch Smooth 818382

Mercruiser Idler Pulley that is used on late model V-6 and V-8 applications. It is the smooth non-grooved pulley that rides on the back side of the belt for a sepentine belt system.

This pulley is also used on 454 7.4 liter engines which used a V- Belt driven raw water pump that has a fuel pump mounted on it. This is the tensioning pulley for that style pump.

Mercruiser Part Number: 818382, 865598