AFE 46-33002 Throttle Body Spacers  Ford F-150 04-09 V8-5.4L

Silver Bullet throttle body spacers are constructed out of durbable T-6061 billet aluminum and utilize a serrated/helix design that creates turbulence in air flow at the point just prior entry into the engine. This turbulence helps the air/fuel charge burn completely for increased horsepower, torque and throttle response.