AED 1" Birchwood Carburetor Spacer - Standard Holley 3552024-17-XXL Pressure Sensitive molded soles for

Pressure Sensitive molded soles for shock absorption and maximum grip

Provides exceptional clarity and no distortion

Z-20 Shield

Bracket mounts most 2-1/2 lb

AED 1" Birchwood Carburetor Spacer - Standard Holley 3552024-17-XXL Pressure Sensitive molded soles forAED 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