Header Gasket Set - SBC D-Port 1.500 x 1.675

The Header Gasket Set - SBC D-Port 1.500 x 1.675 is a crucial sealing component designed specifically for small-block Chevrolet engines that utilize D-port cylinder heads. This gasket set effectively seals the interface between the headers and cylinder head ports, which is essential for preventing exhaust leaks that can negatively impact engine performance and increase noise levels. Whether you are restoring a classic muscle car, enhancing a hot rod, or revitalizing an older engine, this gasket set is vital for ensuring reliable and leak-free operation.

Manufactured by MAHLE ORIGINAL/CLEVITE under part number MS19985, this gasket set is engineered to endure the thermal cycling and exhaust gas pressures typical of high-performance SBC engines. The port dimensions of 1.500 x 1.675 inches are specifically designed to match D-port head castings, ensuring a tight seal that prevents overhang or gaps that could hinder exhaust scavenging. The materials used in this gasket set are chosen for their durability, resisting blow-out even under high-RPM conditions or in turbo/supercharger applications where exhaust temperatures can rise significantly.

This gasket set is favored by mechanics and engine builders for any SBC application utilizing D-port heads, ranging from mild street engines to fully built competition motors. Installation is straightforward: simply position the gasket over each header port during assembly, ensuring proper alignment before torquing the header bolts in a star pattern according to manufacturer specifications. This ease of installation, combined with the gasket's reliability, makes it an excellent choice for both professional and DIY engine builders.