HKS 70017-AT011 Super Hybrid Filter (98-03 Lexus GS300/GS400) HKS has participated in many racing tournaments and accumulated the wide knowledge of automobile parts for the best performance As a total tuning products manufacturer, we have deep and wide know-hows in the exhaust technology Unaffected by moisture or gasoline, made of a washable urethane that needs no oil or special cleaners