AED 1/2" Birchwood Carburetor Spacer - Standard Holley 4087BK dirty conditions

dirty conditions

A friction adjuster is included and allows the driver to pull on it to tighten

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Powerful and effective top and chin bar ventilation system with 14 air intake and extraction channels for maximum ventilation

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AED 1/2" Birchwood Carburetor Spacer - Standard Holley 4087BK dirty conditionsAED Carburetor Spacers offer many distinct advantages that are worth mentioning. Besides traditional tuning changes in plenum volume which can improve torque and power output, Birchwood is a great thermal barrier. By keeping fuel bowls cool you get a noticeable increase in fuel density, resulting in a better charge available for combustion. Results on the dyno of up to 20 horsepower. AED originally designed these spacers for racing but soon found out