Carb. Dissipator 4-Bbl. 1/2in Thick- 4-Hole

The Mr. Gasket Carb. Dissipator 4-Bbl. 1/2in Thick 4-Hole carburetor spacer is a thermal management tool designed for engine builders and performance enthusiasts working with square-bore four-barrel carburetors. This heat dissipator addresses a critical problem in high-performance engine builds: excessive fuel vaporization caused by intake manifold heat transfer to the carburetor. By creating an insulating air gap between the carburetor and manifold, this spacer maintains more consistent fuel atomization and improves cold-start characteristics.

Constructed from aluminum with a half-inch thickness, the Carb. Dissipator 4-Bbl. features four mounting holes that align with standard square-bore carburetor flanges. The aluminum construction provides lightweight heat isolation without adding significant weight to the intake system, while the generous 0.5-inch gap creates an effective air barrier that reduces carburetor temperature by up to 30 degrees Fahrenheit under load. The kit includes all necessary gaskets (upper and lower) to ensure a proper seal at both the carburetor-to-spacer and spacer-to-manifold interfaces, eliminating the need for additional purchasing.

Mechanics and engine builders rely on this spacer for street cars, strip machines, and vintage restorations where fuel delivery consistency matters. Installation is straightforward: remove the carburetor, install the lower gasket onto the manifold studs, bolt the dissipator in place, set the carburetor on the upper gasket, and secure with your existing hardware. Weighing just 0.69 pounds, the spacer works with any square-bore four-barrel design—Holley, Edelbrock, and similar platforms—making it an essential component for manifold heat management on naturally aspirated engines generating consistent power.