Holley Engine Intake Manifold Gasket

Holley Intake Manifold Gaskets: Precision Sealing for Every Build

When you invest in a quality intake manifold, the gasket sealing it to your cylinder heads is every bit as important as the manifold itself. Holley — a name synonymous with American performance for over a century — brings that same engineering discipline to its line of engine intake manifold gaskets, offering solutions that span OEM-style replacement all the way to dedicated race applications.

Materials Built for Performance Demands

Holley's intake manifold gasket lineup draws on multiple proven materials to match the needs of different engines and build levels. The Performance Series gaskets, offered under Holley's Mr. Gasket brand, are manufactured from cellulose/nitrile composition gasket material. This low-density compound conforms well to irregular surfaces and delivers excellent crush resistance at high flange pressures, making it equally at home on a weekend cruiser or a bracket racer. The material is also engineered to seal gasoline, oils, water, and coolant in applications up to 350 degrees Fahrenheit — a critical spec for high-output street and strip builds.

For modern LS and LT platform builds, Holley supplies dedicated O-ring–style intake manifold gasket sets. These are precision-fit sealing solutions designed to work hand-in-hand with Holley's own Hi-Ram, Lo-Ram, Mid-Rise, and Sniper EFI intake manifolds. The LS1/LS2/LS6 O-ring set and the GM Gen V LT1-specific O-ring set each include eight O-rings that seal the head-to-intake flange interface — engineered to mate precisely with the manifolds they accompany. For Ford 5.0L SysteMax II applications, Holley also offers a Kormetal-material gasket sealing the upper-to-lower manifold junction.

Designed for Street, Strip, and Oval Track

One of the standout practical features of Holley's intake manifold gaskets is their ease of use. No additional gasket sealer is required for installation, and the gaskets release cleanly during disassembly — they won't stick to mating surfaces, simplifying future teardowns. Most kits also include manifold front and rear end seals, so builders get a complete sealing package rather than having to source individual components separately.

For builders working with modified cylinder heads or ported intakes, Holley's performance intake gaskets can be trimmed to match modified port openings — a feature that makes them genuinely versatile across a wide range of custom engine combinations. Holley offers a wide variety of port sizes to accommodate many different port configurations, covering small block and big block Chevrolet, small block and big block Ford, and modern GM LS and LT platforms.

The Right Gasket for the Right Application

Whether you're refreshing a classic V8 or finalizing a modern LS swap, matching the right gasket to your specific intake manifold and cylinder head combination is essential for long-term sealing integrity. Holley's intake manifold gaskets are legal for use on emissions-controlled, non-emissions-controlled, and racing-only vehicles, giving builders maximum flexibility across different use cases.

Browse the full selection of Holley engine intake manifold gaskets to find the right fit for your engine combination, and explore the complete Holley brand page for intake manifolds, carburetors, EFI systems, and the full ecosystem of performance parts that make Holley a cornerstone of the performance aftermarket.