Racing Power Company 2" Phenolic Carb Spacer Kit For 4150 Holley - Open R9137

Made out of phenolic resin and engineered to reduce heat transfer from the intake manifold to the carburetor that provides a denser air/fuel mixture for increased power and efficiency. Includes mounting hardware and gaskets for a no-hassle installation.

Specifications:

• 2″ Thickness
• Fits Holley 4150/4160 4BBL Carburetor Flanges
• Includes Mounting Hardware & Gaskets