Mr. Gasket Supercharger Gasket

Mr. Gasket Supercharger Gaskets: Race-Proven Sealing for Forced Induction Builds

When you're running a supercharger, the gaskets holding your forced induction system together face some of the most punishing conditions in all of motorsports — elevated boost pressure, intense heat, and the constant mechanical stress of a spinning blower. That's exactly the environment Mr. Gasket was built for. Founded in 1964 by drag racer Joe Hrudka, Mr. Gasket earned its reputation by producing sealing solutions that could handle what the racetrack demanded, and that tradition carries directly into their supercharger gasket lineup today.

Blower Base Gaskets Built for Roots-Style Superchargers

Mr. Gasket's supercharger gasket offering centers on the iconic GMC-style Roots blower platform — the 6-71 and 8-71 blowers that have powered street rods, drag cars, and muscle cars for decades. Their lineup includes two key thickness options designed to address specific application needs:

• Part #671G — Blower Base Gasket, 1/32" (0.031") Thick: A thinner composite gasket engineered for a tighter, more precise base seal on 6-71 and 8-71 blowers. Ideal when minimal deck height change is critical.
• Part #674G — Blower Base Gasket, 1/16" (0.062") Thick: A slightly thicker composite gasket for the same blower family, offering a bit more crush and compliance for surfaces that need it. This gasket also serves as a supercharger-to-manifold interface gasket for compatible setups.

Both gaskets are precision-cut for an excellent seal and fit, with port sizing and bolt locations engineered to match the exacting dimensions of GMC-derived Roots blowers. Whether you're bolting a blower onto a small block Chevy or refreshing a tired seal on an existing setup, these gaskets drop right into place.

Why Material Quality Matters Under Boost

A supercharger base gasket isn't just a static seal — it has to contain boost pressure that can cycle rapidly with every throttle input. Mr. Gasket addresses this with composite gasket materials that are designed to conform to mating surfaces while resisting blowout under sustained pressure. This approach to material selection reflects the brand's broader philosophy: products engineered by people who understand racing conditions firsthand. As part of the Holley Performance family of brands, Mr. Gasket continues to develop and refine its sealing products using insights drawn from professional motorsports applications.

A Trusted Name in Forced Induction Sealing

Mr. Gasket has spent over six decades proving its products on drag strips and race tracks, and that heritage matters when you're selecting gaskets for a high-stakes forced induction build. The brand's supercharger gaskets are stocked by major performance parts retailers and specified by professional engine builders who can't afford sealing failures. For the serious blower enthusiast, Mr. Gasket offers a straightforward, dependable answer to one of the most critical sealing points in any supercharged engine.

Browse the full supercharger gasket category to compare options, or visit the Mr. Gasket brand page to explore their complete lineup of performance sealing solutions and engine accessories.