Outerwears Pre-Filter Air Filter Wrap - for Carbon Fiber Air Box 2010013 after attachment to the hose

after attachment to the hose

2003-2007 GMC C4500 Topkick

and the largest of valves

Built in drain plug provides easy access to empty contents of bowl

Outerwears Pre-Filter Air Filter Wrap - for Carbon Fiber Air Box 2010013 after attachment to the hoseOuterwears 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