4.380 MLS Head Gasket .051 - BBM

The Cometic Gaskets 4.380 MLS Head Gasket .051 – BBM is a precision-engineered cylinder head gasket designed for high-performance big-block engines that require exacting OEM specifications. This gasket is particularly suited for applications that demand a 4.380-inch bore diameter and a .051-inch compressed thickness, ensuring optimal combustion chamber sealing.

Constructed with Cometic's MLS (Multi-Layer Steel) technology, this head gasket features stainless steel layers combined with elastomer embossments, providing a reliable seal under thermal and pressure cycling. The .051-inch thickness is crucial for maintaining the desired compression ratio while preventing blow-by, making it ideal for high-performance applications.

This gasket is particularly beneficial for builders and rebuilders focused on big-block Chevrolet platforms and similar large-displacement applications. Its robust design ensures it can handle sustained cylinder pressure and thermal stress, making it a superior choice compared to cheaper composite gaskets.