1979-1993 Ford 5.0L Steel Serpentine 20% Underdrive Pulley Set Black especially those that produce high

especially those that produce high horsepower

cut the line and

They're available in several sizes to fit your valve covers

especially if you frequently have to remove and reinstall the valve cover

it's important to have the right parts for the job

1979-1993 Ford 5.0L Steel Serpentine 20% Underdrive Pulley Set Black especially those that produce highSpeedmaster 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.