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Roush Mustang Underdrive Pulley System

SKU: RSH-401433

Manufacturer: Roush

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Availability: In stock

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Roush Mustang Underdrive Pulley System

*image is only a representation and may not be accurate

ROUSH®'s Mustang Underdrive Pulley gives your ride a bump up in horsepower, and gas mileage.

This underdrive pulley is for Mustang GT models 2005-2010 with a 4.6L engine only, and does not work with ROUSHcharged vehicles.

Gain more horsepower, gas mileage, and accessory life with the ROUSH® 25% reduction Mustang Underdrive Pulley. This pulley fits 2005-2010 Ford Mustang GTs with the 4.6L engine only, and does not work with ROUSHcharged™ vehicles.

The ROUSH Mustang Underdrive Pulley dampens damaging engine harmonic vibration, meets SFI Spec. 18.1 and has a diameter that is 25% less than stock. The benefit is that 25% less power is diverted to running accessories, such as the alternator.

As a result, more power is freed for performance. This part has been found to increase power by 8-10 hp. Due to the increased efficiency, fuel economy is also increased. In addition, because the accessories run by this belt are being run at reduced rate, their longevity is improved.

  • Gain 8-10 horsepower
  • Improved fuel efficiency
  • Increased accessory (such as the alternator) life
  • 25% reduction in pulley diameter over stock
  • Fits 2005-2010 4.6 V8 Ford Mustang GTs
  • Does not fit ROUSHcharged™ vehicles
  • Part #401433

Manufacturer Roush
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  • Mustang GT 2005,2006,2007,2008,2009,2005,2006,2007,2008,2009,2010,2010