4.125 MLS Head Gasket .030 - SBC

The COMETIC GASKETS 4.125 MLS Head Gasket .030 is a precision cylinder head gasket specifically designed for Small Block Chevy (SBC) engines. This gasket is ideal for engine builders, performance tuners, and restoration shops who are assembling or rebuilding these engines. It ensures optimal performance and longevity in various applications, including stock rebuilds and high-performance upgrades.

Constructed from multi-layer steel (MLS), this gasket provides exceptional sealing reliability and dimensional accuracy. The 0.030-inch compression thickness is crucial for maintaining the correct compression ratio and combustion chamber volume, which directly impacts engine performance. The 4.125-inch bore diameter aligns perfectly with modern Small Block Chevy configurations, ensuring proper coolant passage and combustion sealing.

This gasket is a standard choice for performance and race applications due to its ability to withstand higher clamp loads and thermal cycling. Whether you are working on a naturally aspirated engine or a forced-induction platform, the correct gasket thickness guarantees repeatable compression readings and prevents combustion leakage at the head-deck interface.