Outerwears Air Filter Pre-Filter Assembly - 14" x 5" Element - Orange Dirt Defender Racing Products 689 lb/in Spring Rate

689 lb/in Spring Rate

1998-2004 Ford Expedition

Measures 39-1/2" between kingpin centers

Bimetal (Aluminum Silicon Base)

Magnetic Kevlar

Outerwears Air Filter Pre-Filter Assembly - 14" x 5" Element - Orange Dirt Defender Racing Products 689 lb/in Spring RateOuterwears 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