Exhaust Gasket Set SBM 318-360

The Remflex Exhaust Gasket Set SBM 318-360 is a precision-engineered pair of header and manifold gaskets designed specifically for small-block Mopar engines ranging from 318 to 360 cubic inches. These graphite gaskets feature 1.250 x 1.750 inch end ports and are engineered to seal exhaust systems reliably across thousands of engine cycles while withstanding the thermal and pressure cycles inherent to high-performance and street applications.

Remflex gaskets are manufactured from advanced graphite composite material, which offers superior thermal stability and resilience compared to traditional copper or steel designs. The graphite construction resists creep under sustained heat exposure, maintains gasket integrity across repeated thermal cycles, and accommodates minor surface irregularities on header and manifold flanges. The specific 1.250 x 1.750 inch port geometry matches OEM Mopar exhaust flange dimensions, ensuring proper alignment and sealing pressure distribution. This gasket set comes as a pair, supplying both the driver and passenger-side gaskets in a single purchase.

This exhaust gasket set addresses a critical wear point on Mopar engines: the exhaust manifold-to-head interface. Technicians and engine builders working on small-block Mopar restoration, rebuild, and performance projects rely on these gaskets to prevent exhaust leaks that can degrade performance and create underhood noise. Whether addressing a factory manifold or upgrading to an aftermarket header, the SBM 318-360 gasket set ensures a clean, lasting seal. Remflex's graphite formulation has established the brand as a standard choice in the Mopar restoration and street-performance communities.