Cold Air Inductions Inc. CF-8350 High Performance Air Filter Lifetime use washable air filter (only to be recharged with a Cold Air Inductions Inc. recharge kit) Pre-oiled from the factory and ready for immediate installation Engineered smooth bore tube stop and radiused velocity stack to reduce turbulence and increase airflow 8 Layers of interwoven cotton gauze filter media, capable of trapping down to 5 microns for superior filtration Direct filter replacement for Cold Air Inductions Inc. cold air intake kit part #'s: 501-1036-10, 501-1036-10-B, 501-1036-12, 501-1036-12-B