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

Important Notes: Not Recommended For Heat Crossover OEM Manifolds

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