Olds Exhaust Gasket

The Olds Exhaust Gasket (MR. GASKET MPN 453) is a precision composite header and manifold gasket engineered specifically for Oldsmobile V8 engines. This gasket seals the critical junction between your exhaust manifold and cylinder head, preventing exhaust leaks that rob horsepower and create unwanted heat in the engine bay. Whether you're running a stock 455 Big Block or a heavily modified small-block setup, a quality exhaust gasket is non-negotiable for maintaining boost, eliminating cabin odors, and protecting surrounding components from thermal damage.

Manufactured by MR. GASKET—a trusted name in high-performance gasket engineering—this pair features a composite construction rated for sustained heat and pressure cycling typical of street and strip applications. The gasket dimensions accommodate the 1.550 x 1.920 inch rectangular port geometry standard to Oldsmobile V8 manifold flanges, ensuring a precise fit without modification. Composite materials provide superior thermal stability compared to traditional fiber gaskets, resisting blowout under aggressive throttle applications while maintaining a durable seal across thousands of heat cycles. The lightweight design (0.17 lbs per pair) minimizes parasitic weight while delivering reliable long-term sealing performance.

This gasket set is ideal for any Oldsmobile V8 owner performing exhaust manifold replacement, header installation, or routine maintenance—especially those upgrading to aftermarket cast or tubular headers. Installation is straightforward: remove the old gasket, clean the mating surfaces with a gasket scraper, apply a light bead of high-temperature sealant, and torque the manifold bolts in a cross pattern to factory specification. Compatible with both stock and performance exhaust systems, the Olds Exhaust Gasket ensures a leak-free seal that preserves peak engine efficiency and protects your investment in V8 power.