JET Power Flo Throttle Body Stock Size Aluminum Natural Various GM Applications 2006 09 HO983020 Silver Bullet throttle body spacers CAGC5512 036 Silver Bullet throttle body spacers are constructed out of durable 6061 T6 billet aluminum and use a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers Available in (10) colors Jet Performance Products quickly growing staff of professional engineers and a highly dedicated team of performance enthusiasts run Jet Performance Products everyday operations Jet Performance Products engineering staff is unsurpassed and considered to be the best tuners in the industry