12-Rib 4-Bolt Marine Supercharger Pulley

BILLET SUPERCHARGER PULLEY FOR YOUR MARINE ENGINE

Fits 2.3, 2.9, 3.3, 4.0 Superchargers

Every Whipple Supercharger pulley is made of 6061-T6 billet aluminum and anodized for wear and environmental protection. Each pulley is engraved with the running diameter size and state-of-the-art lightweight pockets to lower reciprocating mass as well as a guard feature to help unwanted belt wandering during hard running. Standard finish is hard coated black anodized while blue finish is optional. Dimension of each supercharger pulley is based off of the running diameter.

*A general rule of thumb is every .125" of pulley change is .75psi of boost (increase/decrease). There are no returns or exchanges for used pulleys.

**Whipple Supercharger pulleys are specific to the application, do not order this pulley for a different application.

***DOES NOT FIT 4.5L/275 SUPERCHARGER.