Whipple 10-Rib Grooved Guarded Idler Pulley - 3.50 Inch

Whipple 10-Rib Grooved Guarded Idler Pulley - 3.50 Inch

The Whipple 10-rib grooved guarded idler pulley is designed for compatible Whipple supercharger belt-drive applications that require a 10-rib idler with added belt guidance. This pulley features a 3.50" running diameter, single high-speed bearing, and guarded design to help keep the supercharger belt properly aligned in demanding marine and performance applications.

Available in black, blue, and clear anodized finishes, this idler pulley is commonly used with Whipple marine big block supercharger systems and related belt-drive configurations. Always verify pulley diameter, rib count, belt routing, mounting hardware requirements, and part number before ordering or installation.

Key Features

• 10-rib grooved guarded idler pulley
• 3.50" running diameter
• Single high-speed bearing
• Guarded design helps guide the supercharger belt
• Available in black, blue, and clear anodized finishes
• Designed for compatible Whipple supercharger belt-drive applications
• Does not include mounting hardware unless requested

Applications Include

• 1993-2001 454/502 MerCruiser Magnum MPI (330 HP, 385 HP, 415 HP)
• 2001-2015 496 Magnum (Base, HO)
• 1999-2001 500 HP EFI
• 1993-2000 500 HP Carb / 540 Bulldog
• Universal Whipple Marine Big Block kits
• Teague Whipple supercharged engines