Wilson Manifolds Tapered Carburetor Spacer - Holley 390 CFM (1.55" Bore) Spacer - 1" Tall - 4-Hole R030015S lightweight design and a heavy-duty

lightweight design and a heavy-duty blade

Reduces Backpressure

Race / Pro Street

Billet Aluminum Fittings

Same 1-3/8" Venturii & 1-11/16" Throttle Bore size and Throttle Plate/Throttle Shaft size of original 0-4412

Wilson Manifolds Tapered Carburetor Spacer - Holley 390 CFM (1.55" Bore) Spacer - 1" Tall - 4-Hole R030015S lightweight design and a heavy-dutyWilson Manifolds' Carburetor Spacers have been used by more pole, race, and championship winning teams than any other brand in the world. Our Spacers have been developed through years of testing with the top race teams in nearly all forms of motorsports. Wilson Manifolds offers the largest selection of spacer designs and heights in the industry. This assures that we have a spacer design for virtually all classes of racing that will provide optimum