Exhaust Gasket Set - SBF 289-351W w/Square Ports

The Exhaust Gasket Set – SBF 289-351W w/Square Ports is a precision sealing solution engineered for Small Block Ford engines running square-port cylinder heads. This graphite gasket pair seals the critical junction between your exhaust manifold or header and the engine block, preventing exhaust leaks that rob horsepower and create unwanted noise. Whether you're building a street engine, restoring a classic muscle car, or upgrading an existing setup, proper exhaust gasket selection is non-negotiable for performance and longevity.

Remflex gaskets utilize a layered graphite construction that handles thermal cycling far better than traditional soft gaskets, resisting blow-out and maintaining a tight seal across repeated heat cycles from idle to wide-open throttle. The 1.125-inch width and 1.500-inch height dimensions are precisely matched to square-port SBF heads (289 and 351W applications), ensuring full coverage and alignment without overhang or gaps that compromise scavenging. Graphite material flexes with engine movement while maintaining integrity under sustained exhaust temperatures, reducing the likelihood of expensive coolant leaks or compression loss caused by failed gaskets.

This pair is essential for anyone installing aftermarket headers, replacing worn OEM manifolds, or rebuilding a cylinder head on 289 cu in or 351W engines with square ports. Proper installation requires clean sealing surfaces and correct torque specifications, but the gasket's durability means you'll avoid repeat failures that plague cheaper alternatives. Mechanics and enthusiasts consistently choose Remflex for vintage Ford restorations and high-revving stroker builds where reliability is paramount.