Sierra 18-6457 Composite Pulley
Price: $32.99
Save: $9.00
(21% Off $41.99)
Part # 18-6457
2nd Day Air for $2.99 More Eligible
Replaces OEM part #
For: Mercruiser Late model GM V6 & V8 engines
3" OD Serpentine for 13/16" width belt
How to replace this pulley?
You will want to refer to a repair manual. This pulley can be used as an idler pulley or a belt tension release. The way to remove and install depends on its function. So you will need to refer to your repair manual for prop steps to be taken to install and put belt back on properly.

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