GM/Dart LS Next MLX Head Gasket RH 4.200 .060

The GM/Dart LS Next MLX Head Gasket RH 4.200 .060 is designed for serious LS engine builders and performance enthusiasts looking to enhance their engine's capabilities. This right-hand gasket effectively addresses the critical sealing challenge between the cylinder head and block, where combustion pressure, coolant flow, and oil passages converge. Proper head gasket selection is crucial for maintaining compression sealing integrity and ensuring efficient coolant circulation.

Manufactured by Cometic Gaskets, this unit features their proprietary MLX facing, a multi-layer synthetic construction that resists combustion blowby and maintains consistent clamping load across thermal cycles. The gasket is specifically sized with a 4.200-inch bore diameter for LS Next cylinder head applications and a .060-inch thickness to ensure proper deck height accommodation and reliable sealing without over-compressing the material. It is engineered to withstand elevated boost pressures and high RPM operation.

This gasket is ideal for both street and competition engine builds, making it a go-to choice for performance applications. Installation requires careful attention to deck surface preparation, proper head bolt torque sequencing, and correct gasket orientation—best practices that experienced LS engine builders understand. With its robust design, this gasket supports the demands of high-performance engine setups.