1/2in Carburetor Spacer 4150 Flange

The 1/2in Carburetor Spacer 4150 Flange by HOLLEY is a crucial component for performance engines equipped with carburetors. This precision spacer is designed to fit between your 4150-pattern carburetor and intake manifold, serving as both a thermal barrier and a tuning tool for automotive enthusiasts. It is particularly beneficial for those building classic hot rods, vintage muscle cars, or high-performance engines.

Constructed to HOLLEY's high standards, this 1/2-inch thick spacer effectively reduces heat transfer from the engine block and manifold to the carburetor, which is essential for preventing vapor lock and fuel percolation in high-heat environments. The spacer's design aims to optimize fuel mixture delivery while maintaining runner velocity. Its lightweight nature minimizes inertial mass, contributing to improved cold-start performance and drivability.

Engine builders and restorers will find this spacer particularly useful in hot climates or high-output applications where fuel stability is critical. While it is compatible with Holley 4150-pattern models, users should verify compatibility with their specific carburetor and intake manifold setup. Installation is straightforward, requiring only the unbolting of the carburetor and placement of the spacer before reattaching.