BB Chrysler Exhaust Gskt

The MR. GASKET BB Chrysler Exhaust Gasket (MPN 5936) is a precision-engineered header and manifold gasket designed specifically for Mopar B- and RB-series big-block engines. As an experienced mechanic, you know that a quality exhaust gasket is critical to sealing the interface between your cylinder head and exhaust manifold—any leak compromises power output, increases emissions, and degrades fuel economy. This gasket exists because factory seals deteriorate under thermal cycling, and a reliable replacement prevents exhaust gases from escaping into the engine bay where they accelerate corrosion and rob performance.

Built with a steel-core laminate construction, the BB Chrysler Exhaust Gasket uses Mr. Gasket's Ultra-Seal technology to withstand continuous high-temperature exposure and vibration. The rectangular port configuration measures 1.780 x 1.480 inches per port, matched to original Mopar B and RB big-block specifications for a perfect fit. Steel-core laminate construction distributes clamping load evenly, resists blow-out under boost or high exhaust temperatures, and maintains a consistent seal across multiple heat cycles. This gasket arrives as a pair, allowing you to replace both sides simultaneously and ensure balanced exhaust flow across all cylinders.

Owners restoring or modifying classic Mopar muscle cars, street rods, or marine engines rely on this gasket for leak-free performance during both stock and modified power applications. Whether you're running a stock 440 Magnum or a high-compression stroker build, proper gasket selection prevents costly coolant and oil seepage that can lead to bearing damage or overheating. Installation is straightforward—clean the mating surfaces thoroughly, apply a light coat of gasket sealant to both sides, and torque the manifold bolts in a cross pattern to factory specifications. Compatible exclusively with Mopar B- and RB-series engines, this gasket is a must-have consumable for any serious rebuild or restoration project.