Phenolic Spacer Quad(4hl

The MR. GASKET Phenolic Spacer Quad 4-Hole is a 1-inch thick carburetor spacer engineered to fit spread bore four-barrel carburetors. This phenolic spacer improves engine performance by increasing the distance between the carburetor and intake manifold, enhancing fuel distribution and thermal management in classic muscle cars and street performance vehicles.

The 1-inch thickness creates a plenum chamber that promotes more uniform air-fuel mixture distribution to each cylinder, resulting in improved throttle response and idle quality. The phenolic material provides superior thermal insulation compared to aluminum, reducing fuel percolation and carburetor heat soak during extended driving or high-ambient conditions. All necessary gaskets and mounting hardware are included—no additional purchases required for installation.

This carburetor spacer is designed for builders and restorers working with four-hole spread bore carburetors on vintage and modified engines. It's commonly used in Chevrolet big-block and small-block applications, as well as Pontiac and Oldsmobile platforms. The phenolic construction reduces manifold heat transfer, which is particularly valuable in street cars where carburetor icing or fuel boiling can affect drivability.

MR. GASKET is recognized for quality engine gaskets, spacers, and carburetor components in the performance and restoration community. This spacer meets OEM dimensional specifications for four-hole spread bore applications and is finished in black for a clean, factory-correct appearance.