Open Carb Spacer, Durable Carburetor Spacer for 4 Barrel - DAUZ, DAUZ5kdzavo16w

• As a general rule, the open design interval increases plenum volume to improve high RPM power, while the 4‑hole design increasesmixture for improved low‑speed and mid‑range . Carb spacers extend the length of the intake mixture column and improves the air/fuel distribution. Phenolic plastic style carb spacer also insulates your carb from excessive engine heat. Fits 4 barrel carbs with a square bore base like for Holley 4150/4160, for Barry Grant, for Carter and for Edelbrock. Lowering the fuel temperature inside the carburetor results in a denser, more powerful fuel charge to the manifold. 1in open center style carb spacer, for Holley 4150 carburetor, replacement for Chevy Small/, replacement for Ford, replacement for engine.