Carb Spacer 4150 4 Hole 1.00in

The Carb Spacer 4150 4 Hole 1.00in by ALLSTAR PERFORMANCE is a precision intake manifold spacer engineered for carburetor-equipped engines seeking improved airflow dynamics and thermal management. This component sits between your 4150 square-bore carburetor and intake manifold, creating critical separation that enhances fuel atomization and reduces carburetor heat soak. Mechanics and engine builders rely on carburetor spacers when tuning naturally aspirated and supercharged applications, particularly in drag racing, street performance, and classic car restoration where every fraction of a degree and airflow optimization matters.

Manufactured from durable plastic composite material, the Carb Spacer 4150 4 Hole 1.00in features a 1-inch thick profile that provides optimal runner length adjustment while maintaining structural integrity under full throttle conditions. The four-hole configuration matches standard 4150 square-bore carburetor bolt patterns, ensuring precise fitment and repeatable sealing with gaskets on both upper and lower surfaces. At just 1.06 pounds, this spacer contributes minimal weight while the plastic construction resists corrosion and thermal degradation, eliminating the risk of galvanic corrosion at the carburetor-to-manifold interface that sometimes occurs with metal spacers in high-heat engine bays.

This spacer delivers measurable gains in carbureted fuel delivery systems where intake runner temperature control and air charge cooling are priorities. Installation is straightforward: remove the carburetor, place the spacer with gaskets on the manifold studs, and reinstall your carb—no modifications required. The gray polymer construction works across street, strip, and show applications, compatible with 4150 Holley carburetors and similar square-bore designs. Whether you're dialing in a vintage muscle car, optimizing a drag-focused build, or refreshing classic carburetor tuning, the Carb Spacer 4150 4 Hole 1.00in by ALLSTAR PERFORMANCE provides consistent, reliable performance at a fraction of the cost of exotic intake manifold solutions.