Mr. Gasket Differential Cover

Mr. Gasket Differential Covers: Race-Proven Sealing for the Street and Strip

When it comes to protecting the gear oil inside your rear axle housing, few names carry as much weight as Mr. Gasket. Born on the drag strips of Cleveland in the mid-1960s, the brand was built from the ground up on one core principle: a seal that holds under pressure. That heritage translates directly into their lineup of differential cover products, which are engineered to keep your rear end leak-free whether you're daily-driving a classic muscle car or pushing a performance build to its limits.

Two Distinct Approaches to Differential Sealing

Mr. Gasket offers differential cover products in two main formats, each suited to different needs and budgets:

• Cellulose/Nitrile Composite Gaskets: Mr. Gasket's axle housing and differential cover gaskets are manufactured from a .047-inch thick cellulose/nitrile composite material, delivering excellent sealing and durability. They are precision die-cut for an accurate, consistent fit and are available for a wide range of popular axle configurations, including the Ford 9-inch (1957–1981), the Ford 8.8-inch (1981–2014), the GM 10-bolt, and the GM 12-bolt passenger car and truck rear ends, as well as Chrysler 8-3/4-inch applications.
• Aluminum-Carrier Gaskets with Silicone Beading: For builders who want a cleaner, more modern installation, Mr. Gasket also produces differential cover gaskets featuring an aluminum carrier with silicone elastomer beading and a rubber-coated binder. These gaskets offer a no-silicone installation—no RTV, no mess—and create a strong, long-lasting seal that handles the demands of both factory and high-performance front and rear ends.
• Chrome Steel Cover Kits: For those who want form as well as function, Mr. Gasket also produces chrome steel differential cover kits for popular axles like the GM 12-bolt truck, complete with a new gasket and fasteners included in the box for a straightforward, all-in-one installation.

Wide Application Coverage for American Muscle

One of the strongest selling points of Mr. Gasket’s differential cover lineup is its broad fitment range across the most iconic American rear axle platforms. Whether you’re restoring a first-gen Camaro, building a Fox-body Ford, or upgrading a classic Mopar, there’s a Mr. Gasket solution engineered for your specific axle housing. Browse the full differential cover category to find coverage for GM, Ford, and Chrysler applications spanning decades of production.

Racing DNA in Every Gasket

Mr. Gasket’s reputation wasn’t built in a boardroom—it was built on the race track. Founder Joe Hrudka used his own ‘57 Chevy as a test bed to develop gaskets that could withstand the punishing temperatures and pressures of drag racing before bringing them to market. That same no-compromise philosophy carries through to every differential cover gasket the brand produces today. Now part of the Holley Performance family, Mr. Gasket continues to expand its application coverage with products engineered for both race cars and everyday muscle cars alike.

If you need a reliable, leak-free seal on your rear axle housing—whether you’re changing gear oil after a build or buttoning up a full drivetrain restoration—Mr. Gasket differential cover gaskets deliver the sealing integrity the brand has been known for since 1964.