ASP Underdrive Pulley Red Aluminum Set Mustang 5.0L 1979-1993

Don't let the alternator, power steering, water pump and air compressor rob horsepower from your Mustang's 5.0L engine! Designed for 1979-1993 Mustangs, this set of underdrive pulleys reduces the amount of power needed to drive external engine accessories, thus increasing engine horsepower. These ASP Red Billet Aluminum Underdrive Pulleys (822125) typically increase horsepower by 12-15 while also increasing mileage by 2-3 MPG.

Features and Benefits: 
- Increased Horsepower
- Reduced Drag
- Added Detail
- 25% Underdrive Crank
- 15% Underdrive Water Pump
- 2.5-inch Alternator
- 950 RPM Full Charge
- Simple Install with Basic Hand Tools

When you replace factory-sized crank and accessory drive pulleys with a resized pulley, the accessories are slowed. This results in more horsepower available to the drive wheels. These street pulleys are made of billet aluminum, come in a red finish and are designed to exceed factory quality. 

Set Includes: 
- (1) 25% Crank Pulley
- (1) 15% Water Pump Pulley
- (1) 2 1/2" Alternator Pulley
- Installation Hardware