MLS Exhaust Gasket - SBC 1.450 x 1.480 Port

The MLS Exhaust Gasket - SBC 1.450 x 1.480 Port by COMETIC GASKETS is the critical seal between your small-block Chevrolet cylinder head and exhaust manifold, engineered to withstand extreme thermal cycling and combustion pressures. This multi-layer steel gasket is purpose-built for performance builds where factory gaskets fail under elevated boost, nitrous, or sustained high RPM operation. Whether you're building a street machine, weekend racer, or shop hot rod, this gasket provides the reliability needed to prevent exhaust leaks that rob power and degrade engine longevity.

COMETIC's multi-layer steel (MLS) construction uses embossed stainless steel layers with elastomer sealing beads to create a conformable, reusable gasket that maintains compression across thermal extremes—critical when header temps routinely exceed 1200°F on boosted or carbureted engines. The 1.450 x 1.480 port sizing matches standard SBC head-to-manifold flanges, while the gasket's thickness and material composition allow it to recover after disassembly, making repeat engine work less costly than disposable fiber gaskets. This design eliminates the exhaust leaks, blowby soot, and performance loss that plague stock gaskets in modified applications.

Ideal for SBC variants from 262 to 400 cubic inches with factory or aftermarket manifolds, this gasket is essential for any builder stepping beyond stock power levels or replacing a failed gasket in a modified engine. Installation is straightforward: ensure manifold and head surfaces are clean and flat, apply a light coat of gasket sealer to the MLS face, then torque manifold bolts to specification in a star pattern for even clamping load. The 0.52 lb gasket set ensures you have what you need for both banks, and COMETIC's reputation for durability means your exhaust stays sealed through countless heat cycles and pulls.