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UNDERDRIVE CRANK PULLEY 25% REDUCTION 01/04 V6
ASP 25% Reduction Underdrive Crank Pulley for 2001-2004 Mustang V6.
Underdrive pulley systems increase engine horsepower by reducing the amount of power required to drive external engine accessories. By replacing factory-sized crank & accessory drive pulleys with a resized pulley, the accessories are slowed, resulting in more horsepower available to the drive wheels.
Typically increase horsepower by 12-15, and can increase mileage by 2-3 MPG.
-Serpentine Belt, #JK61001AA
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