SBC MLS Head Gasket 4.165 Bore .030in

The SBC MLS Head Gasket 4.165 Bore .030in from Cometic Gaskets is a precision sealing solution designed for serious small-block Chevy builders focused on high-performance and street applications. This multi-layer steel gasket is engineered for engines running moderate to aggressive boost levels, tight compression ratios, and elevated cylinder pressures, where traditional composite gaskets may not suffice.

Cometic's MLS (Multi-Layer Steel) construction features precisely embossed spring steel layers with elastomer sealing beads, creating a conformable, reusable seal that withstands thermal cycling and pressure spikes better than single-layer alternatives. The .030-inch thickness is specifically calibrated for standard Small Block Chevy deck heights, ensuring compatibility with stock or ported cylinder head and block surfaces without the need for custom machining.

This gasket is ideal for mechanics and engine builders working on rebuilt engines that will operate consistently at 5,000+ RPM and may utilize moderate nitrous or supercharger setups. Its design accommodates a 4.165-inch bore diameter, making it suitable for various displacement combinations within the Small Block Chevy range, particularly for 350 and 383 configurations.