Intake Gasket Set - SBC Ret-Port 1.265 x 2.180

The MAHLE ORIGINAL/CLEVITE Intake Gasket Set for Small Block Chevy Rectangular Port (MS20012) is a precision composite gasket assembly engineered for engine builders and restoration specialists working on SBC platforms. This intake manifold gasket set features 1.265 x 2.180 inch rectangular port dimensions with 0.06 inch thickness composite construction, delivering the critical seal integrity demanded in high-performance and stock small block applications. Built to OEM specifications by MAHLE, a manufacturer with decades of powertrain sealing expertise, this gasket set provides reliable port-to-manifold sealing across a wide temperature and pressure range.

The 0.06 inch thickness and composite material construction are calibrated for proper clamping load distribution across the intake manifold mounting surface, preventing both leakage and gasket degradation under typical operating stress. The rectangular port geometry matches standard SBC cylinder head configurations, ensuring precise alignment without port mismatch or flow restriction. Composite gasket materials offer thermal cycling resistance superior to older fiber compositions, maintaining effective sealing through repeated heating and cooling cycles without crushing or permanent set.

This gasket set addresses the critical failure point in small block rebuild and engine refresh projects. Whether rebuilding a 283, 305, 350, or 383 cubic inch small block, intake manifold gasket failure causes coolant and oil seepage, vacuum leaks affecting idle quality, and potential hydro-lock scenarios if coolant enters the combustion chamber. Professional engine builders and serious enthusiasts restoring classic Chevrolet performance vehicles depend on proper intake sealing as a foundation step before tuning or performance modifications. Using an OEM-specification gasket set eliminates guesswork and ensures the seal meets original factory tolerances and material standards.

Small block Chevy platform standardization across decades of production means this gasket set maintains broad compatibility across generations of SBC engines. MAHLE's positioning as an OEM supplier to major automakers means these gaskets meet the same engineering and quality standards that original factory gasket sets did, without the original equipment markup. For engine rebuilds, race prep, or preventive maintenance on high-mileage small block applications, this composite intake gasket set delivers proven reliability at competitive pricing.