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Your cart is empty.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.
John Reznicek
Reviewed in the United States on October 26, 2011
I have a 2000 GMC 2500 and getting 4 mpg better. Manufacturer needs to include to extensions for the rear of the air box, because when you tighten down the nut to hold the air box the legs are up off the manifold. But other than that its a great product and easy to install.
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