aFe Silver Bullet Throttle Body Spacers TBS GM Trucks & SUVs 07-11 V8-4.8/5.3/6.2L (GMT900) Lights>Headlights 81mm CB Raw Machined w/BH-H24125

81mm CB Raw Machined w/BH-H24125 Wheel

Once installed

2007 Chevrolet Silverado 3500 HD LTZ DUAL REAR WHEELS

Designed to fit the contours of your stock differential cover

1970-1974 Chevrolet G10 Van (Front)

aFe Silver Bullet Throttle Body Spacers TBS GM Trucks & SUVs 07-11 V8-4.8/5.3/6.2L (GMT900) Lights>Headlights 81mm CB Raw Machined w/BH-H24125Silver 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.