Header Exhaust Gasket Set Mopar 5.2L/5.9L Mag.

The Edelbrock Header Exhaust Gasket Set for Mopar 5.2L and 5.9L Magnum engines is a precision composite gasket pair engineered to seal exhaust ports against high-temperature combustion byproducts. This ultra-seal design features 1.500 x 1.200 inch rectangle port dimensions sized specifically for small-block Mopar applications, preventing exhaust leaks that compromise engine efficiency and increase underhood heat.

Composite gasket construction provides superior thermal cycling resistance compared to standard steel gaskets, critical in performance and modified engines where exhaust temperatures spike above factory baseline. The material composition maintains elasticity under repeated heating and cooling cycles while resisting blowout at peak combustion pressures. Proper sealing at the header-to-manifold junction eliminates unburned exhaust gas bypass that would otherwise dilute fresh charge and increase emissions, making this gasket set essential for maintaining stoichiometric air-fuel ratios and consistent cylinder scavenging.

This gasket pair is suited for builders and engine shops working on 318 and 360 cubic inch Mopar platforms, whether for stock restoration, street performance, or light competition builds. Aftermarket header installation, engine rebuild, or routine manifold gasket replacement all benefit from using application-specific gaskets that match your engine's port geometry. The pair format means both driver and passenger sides are addressed in a single purchase, simplifying inventory management and ensuring matched sealing characteristics across the engine.