SKU: SKU: CGSPRO3009T-4100-053
The Cometic GM LLY/LBZ Duramax Top End Gasket Kit - 4.100in Bore - .053in MLX Cylinder Head Gasket - PRO3009T-4100-053 is a precision-engineered head gasket with a 4.100" bore and .100" compressed thickness.
The Cometic MLX Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring MLX Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers for superior sealing under extreme cylinder pressures and temperatures. Precision CNC-machined to exacting tolerances, this gasket seals combustion, water jackets, and oil passages simultaneously — eliminating the need for multiple gaskets or sealing compounds.
Verified fitment: Chevrolet Express 2500 (2006–2007); Chevrolet Express 3500 (2006–2007); Chevrolet Silverado 2500 (2005–2007); Chevrolet Silverado 3500 (2005–2007); GMC Savana 2500 (2006–2007); GMC Savana 3500 (2006–2007); GMC Sierra 2500 (2005–2007); GMC Sierra 3500 (2005–2007).