Flange Gasket 1150/1250 CFM Carbs 4-Hole

The Flange Gasket 1150/1250 CFM Carbs 4-Hole is a precision carburetor base plate gasket engineered for high-performance four-barrel carburetors in the 1150–1250 CFM flow range. Designed for Holley Dominator platforms and similar applications, this gasket creates a critical sealed interface between the carburetor body and intake manifold. Proper gasket selection is essential to prevent fuel and air leaks that degrade engine performance, fuel economy, and reliability in both street and racing environments.

Manufactured from composite material and rated at 0.063 inches thick, this four-hole gasket is engineered to withstand the thermal and pressure cycling inherent in fuel-injected and carbureted engine applications. The composite construction balances durability with compliance, preventing carburetor base plate warping while maintaining a consistent seal across the mounting surface. The four-hole configuration aligns precisely with Dominator carburetors and compatible manifold ports, ensuring uniform clamping load distribution and eliminating hot spots that can cause fuel vaporization or air bypass. Compact dimensions of 7 × 7.5 inches accommodate standard four-barrel footprints without interference with intake runners or fuel lines.

This gasket is essential for carburetor rebuilds, intake manifold replacement, or seasonal engine maintenance on muscle cars, hot rods, and performance trucks running Holley four-barrel carburetors in the mid-to-high CFM range. Users performing carburetor base plate removal—whether for jet changes, accelerator pump service, or fuel bowl cleaning—must replace the gasket to restore a gas-tight seal; reusing old gaskets invites fuel leaks and erratic idle quality. Weighing just 0.07 pounds, the gasket installs in minutes with standard fasteners and requires no special tools or alignment fixtures, making it suitable for both shop and field maintenance operations.