Fine-tune your vehicle with Dart carburetor spacers to achieve extra horsepower and smoother throttle transitions. The spacers feature a "clover-leaf" design, to match the manifold plenum shape and to prevent the throttle plate screws from falling out.

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AFR Carb Spacer, SBC/SBF 1” Phenolic Tapered 4 Hole, for #4150 Carb

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