Cometic GM L18 Vortec 8100 Gen-VII Big Block V8 .140in MLS Cylinder Head Gasket - 4.280in Bore - RHS

When you're rebuilding the top end of your GM L18 Vortec 8100 Gen-VII Big Block V8, getting the cylinder head gasket right is crucial for a solid seal. This Multi-Layer Steel (MLS) gasket from Cometic is built to handle the demands of these powerful engines, ensuring your combustion chambers stay sealed and your engine runs smoothly. It's designed for the right side cylinder head and features a 4.280-inch bore, making it a direct fit for a range of Chevrolet and GMC trucks and SUVs from the early 2000s, like the Silverado 2500 HD or Yukon XL 2500.

Cometic constructs these MLS gaskets with multiple layers of stainless steel, which gives them increased strength and the ability to rebound, helping to resist corrosion and the shearing forces that can occur between aluminum heads and cast iron blocks. The outer layers are coated on both sides with Viton, a heat-resistant rubber material that can handle tough sealing environments and varying surface finishes without needing any additional sealants. The center layer is stainless steel and can be varied in thickness to meet specific requirements; this particular gasket has a compressed operating thickness of 0.140 inches.