4.630 MLS Head Gasket .120 - BBC

The 4.630 MLS Head Gasket .120 - BBC from COMETIC GASKETS is designed for Big Block Chevy engine builders and performance enthusiasts seeking reliability in high-compression and high-boost applications. This gasket is particularly suitable for street engines, bracket racing platforms, or stroker combinations, ensuring optimal performance under demanding conditions.

Constructed from multi-layer steel (MLS), this gasket provides a consistent seal under extreme cylinder pressures and thermal cycling, outperforming traditional composite gaskets. The .120-inch thickness is engineered to match specific BBC deck heights and combustion chamber volumes, ensuring proper compression ratios and preventing quench or piston-to-head clearance issues.

Ideal for any BBC platform, this gasket is particularly beneficial for turbocharged or supercharged builds where cylinder pressures can exceed 400 PSI. Its advanced MLS technology resists blowby and coolant seepage, making it a reliable choice for high-performance applications.