Cometic C5883-040 MLS Cylinder Head Gasket GM Duramax Bore Thick - for 4.100 040

The Cometic C5883-040 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM Duramax diesel engines. This left-hand side gasket features a 4.100-inch bore diameter and .040-inch compressed thickness, designed to fit LB7, LLY, LBZ, LMM, LGH, and LML Duramax engine codes.

Key Features:

• Multi-Layer Steel construction provides superior sealing and durability under extreme cylinder pressures
• .040-inch compressed thickness allows for precise deck height and compression ratio tuning
• 4.100-inch bore diameter optimized for stock and performance Duramax applications
• Advanced MLS technology accommodates thermal expansion and contraction better than conventional gaskets
• Engineered for left-hand side cylinder bank installation
• Compatible with LB7, LLY, LBZ, LMM, LGH, and LML Duramax diesel engines

Cometic's MLS gaskets feature multiple layers of stainless steel with specialized coatings that create a superior seal around combustion chambers, coolant passages, and oil galleries. This gasket is ideal for both stock rebuilds and performance builds where reliable sealing under high boost and cylinder pressure is critical.