4.375 MLS Head Gasket .098 - BBC

The Cometic Gaskets 4.375 MLS Head Gasket .098 is a precision-engineered multi-layer steel gasket designed specifically for big-block Chevrolet (BBC) engine builds where durability and reliability under high combustion pressures are essential. This gasket is ideal for those rebuilding classic muscle cars, constructing performance street engines, or preparing dedicated race mills.

Constructed with .098-inch thickness and multi-layer steel (MLS), this gasket represents the gold standard for serious BBC applications. The MLS technology utilizes layered steel sheets bonded together to evenly distribute clamp load across the gasket face, preventing localized hot spots and micro-leaks that can degrade engine performance over time.

This gasket excels under elevated boost pressure and is suitable for nitrous oxide applications and fuel combinations that generate sustained cylinder pressures above stock engine specifications. It is compatible with BBC 396, 427, and 454 variants, making it a versatile choice for performance, forced induction, and high-compression builds.