aFe Power, Silver Bullet Throttle Body Spacer, for 91-06 Jeep Wrangler YJ, TJ, TJ Unlimited, Cherokee XJ & Grand Cherokee WJ with 2.5/4.0L

Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.This throttle body spacer is 50-state legal (CARB E.O Number D-516-2).