1979-1993 Ford 5.0L Steel Serpentine 20% Underdrive Pulley Set Black

PCE underdrive pulley kits are built from aircraft-quality material andcomputer-machined. By reducing the speed of the accessories, these underdrive pulleys free up an average of 8-15 horsepower , while retaining full cooling and charging characteristics. Most kits can be bolted on in less than 30 minutes.