K&N Air Filter Oil (99-0504) K&N 99-0504 is a 6.5 ounce aerosol can of air filter oil. K&N Air Filter Oil is the only oil specially formulated to work in combination with the cotton fabric in K&N air filter elements providing a superior air filtration...

K&N 63 Series F.I.P.K. (63-9034) The K&N AirCharger 63-9034 air intake system replaces your vehicle’s restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they...

S&B Cold Air Intake (Cotton Cleanable or Dry Extendable Filter) Our cold air intake for the Toyota 4Runner / FJ Cruiser was engineered to minimize air restriction and flows 43.47% better than stock. This kit comes with a fully enclosed airbox that...