Cork Vacuum Passage Gskt

The Cork Vacuum Passage Gskt by Holley is an essential carburetor gasket set designed for precision fuel management in classic and modified engines. This set of 20 cork gaskets seals the vacuum passage between the choke and vacuum secondary housing on Holley carburetors, preventing unwanted air leaks that compromise idle quality, fuel delivery, and throttle response. Whether you're rebuilding a vintage carb or restoring a high-performance street engine, these gaskets eliminate creeping vacuum leaks that are often overlooked during initial assembly.

Manufactured from natural cork material, this gasket features precise dimensional specifications: 0.188 inch inner diameter and 0.063 inch thickness. Cork is the industry standard for carburetor applications because it compresses slightly under clamp load, conforming to machined surfaces and providing a reliable seal without damaging softer aluminum castings. The thin 0.063 inch profile ensures minimal stack-up while maintaining adequate sealing surface. Each gasket in the 20-piece set is cut to exact tolerance, eliminating the need to fabricate custom seals or resort to inferior silicone alternatives that can harden and fail prematurely in fuel vapor environments.

Mechanics and engine builders working with Holley four-barrel and two-barrel carburetors will find this set indispensable for complete rebuilds, secondary stage repairs, or troubleshooting persistent stumble on acceleration. The 20-pack quantity allows stock for multiple carbs or future rebuilds, reducing downtime when gasket degradation occurs. Installation is straightforward: position gaskets on the vacuum passage ports before reassembling the choke and secondary housing, then torque fasteners evenly to seat the cork properly. This product is compatible with all Holley carburetor models featuring traditional vacuum-operated secondaries and choke housings.