Performance World 4150-1 1" Carburetor Power Spacer

Power Spacer?. Get 10-15+ HP, improved torque and throttle response. Billet 6061-T6 aluminum. Ultra lightweight design. Black hard anodizing for use with Methanol and Alcohol. Fits 4150/4160 Holley? square bore. 1" thick. Holley? is a registered trademark of Holley Performance Products.