Intake Gasket - BBC w/SR 20 Heads (Each)

The Brodix Intake Gasket for BBC with SR 20 Heads (MG 2021) is a precision-engineered composite gasket designed for big-block Chevy engines running Brodix SR 20 cylinder heads. This 0.06-inch-thick rubber-coated composite gasket seals the 1.842 x 2.563-inch rectangular intake ports with the reliability required in high-performance and competition engine builds where port-to-manifold sealing integrity directly affects combustion efficiency and preventing coolant or fuel leakage into the crankcase.

The 0.06-inch thickness is engineered to match the specific port geometry and compression ratios typical of SR 20 head applications, ensuring consistent clamp load without over-compression that could cause gasket creep or under-compression that invites vacuum leaks. The rubber-coated composite construction balances durability against thermal cycling—a critical factor in big-block engines where cylinder head temperatures routinely exceed 200°F. The material resists chemical attack from modern coolant formulations and maintains dimensional stability across repeated heat cycles, which prevents the port misalignment issues that degrade seal quality over extended engine runtime.

This gasket is specified for builders and engine shops performing big-block Chevy restorations, street performance upgrades, or race engine assembly where OEM or non-matched gaskets would compromise the precision fit the SR 20 head design demands. Proper installation requires clean mating surfaces, correct torque sequence, and specification-grade fasteners—best practices that separate reliable builds from leak-prone ones. Individual gasket units ensure you have exact replacements on hand for teardown or repair without buying unnecessary bulk.