Outerwears Air Filter Pre-Filter Assembly - 14" x 5" Element - Purple Transmission & Drivetrain 3-1/4 in OD

3-1/4 in OD

Very strong from mid-range to high end torque and horsepower for LS engines with rectangular port cylinder heads

460 in Effective Stud Length

A degree bushing is essential to getting your valve timing correct when you install and degree your cam

Free EFI Tuning Software

Outerwears Air Filter Pre-Filter Assembly - 14" x 5" Element - Purple Transmission & Drivetrain 3-1/4 in ODOuterwears was created to fulfill a desperate need to keep the Air filter and engine clean during off road racing. Racers and engine builders were experiencing loss of horsepower and engine damage due to sand, dirt, and other debris prematurely packing (clogging) the filter and often passing through the filter into the engine. Filters loading up with dirt meant loss of horsepower and in many cases loss of a race. Race crews were noticing severe engine