Underdrive pulley kits help free up power by slowing accessory speed on performance street and track builds. This PRO/SPORT kit gives 2005-2006 Mustang 4.6L 3V owners a 25% underdrive damper and pulley setup with the hardware needed for installation while retaining OE belts.

PRO/RACE 42771 PRO/SPORT Under Drive Damper and Pulley Kit Features:

• 2005-2006 Ford Mustang 4.6L 3V applications
• 25% underdrive configuration
• SFI Spec 18.1 bonded harmonic damper
• All-steel damper construction
• Spin tested to 12,500 rpm
• 60-degree precision engraved timing marks
• Clear baked paint finish
• OE belts reused

PRO/RACE 42771 PRO/SPORT Under Drive Damper and Pulley Kit Includes:

• Damper
• Short-shaft water pump pulley
• New crank bolt
• Alternator bracket bolt
• Installation bolt

PRO/RACE 42771 PRO/SPORT Under Drive Damper and Pulley Kit Notes:

• Engine cooling and battery charging will be reduced and may not be adequate for city driving