Cometic GM LB7 Duramax Top End Gasket Kit - 4.100in Bore - .045in MLS Cylinder Head Gasket - PRO3008T-45

The Cometic GM LB7 Duramax Top End Gasket Kit - 4.100in Bore - .045in MLS Cylinder Head Gasket - PRO3008T-45 is a precision-engineered head gasket with a 4.100" bore and .100" compressed thickness.

The Cometic Multi-Layer Steel (MLS) head gasket is engineered for high-performance and racing applications where OEM gaskets fall short. Featuring Multi-Layer Steel (MLS) construction, this gasket uses multiple embossed steel layers that conform to surface irregularities and maintain a positive seal. 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.

• Material: Multi-Layer Steel (MLS)
• Bore Size: 4.100"
• Thickness: .100" compressed
• Part Number: PRO3008T-45

Verified fitment: Chevrolet Silverado 2500 (2001–2004); Chevrolet Silverado 3500 (2001–2004); GMC Sierra 2500 (2001–2004); GMC Sierra 3500 (2001–2004).