Built for reliability under stock or high-performance conditions, this premium multi-layer steel (MLS) head gasket delivers consistent sealing for GM Duramax engines. Designed to maintain proper cylinder pressure and withstand extreme heat and boost, it’s available for both Left (Driver) and Right (Passenger) side fitment.

Choose from multiple thickness options to match your piston protrusion, head resurfacing, or compression-ratio needs:

• .027" – Factory-level thickness for untouched surfaces

• .055" – Slightly thicker to accommodate minor machining
  We currently only offer the Left Side in .055" thickness

• .084" – Mid-range thickness for rebuilt or performance applications

• .140" – Extra-thick option for significant resurfacing or lowered compression on high-boost builds

Whether you're completing a stock refresh or assembling a competition-level Duramax, this MLS gasket ensures a secure, long-lasting seal.