K&N Replacement Air Filter Monster S2R / S4R Category_Levers Constructed with a neoprene cover

Constructed with a neoprene cover and nitrile tube for use with leaded and unleaded gasoline and diesel fuel

Staggered tread pattern provides excellent wet weather performance

the relay controls the amount of power that is transmitted to the fuel pump

2x leg bushings

BOLT hardware meets or exceeds OEM specs

K&N Replacement Air Filter Monster S2R / S4R Category_Levers Constructed with a neoprene coverThis K&N racing air filter has just two layers of cotton to provide even lower air restriction than our replacement air filter for street vehicles. Unlike K&N replacement air filters, fuel management modifications will be necessary with this racing filter. K&N racing air filters are washable and reusable. Features: Designed to increase horsepower and acceleration. Designed for racing and track applications, not for street use. Washable and reusable