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Cometic GM LS1 SB 4.100in Bore .045in MLS-5 Head Gasket

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.045". Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements. GM LS1/LS2/LS3/LS6 Gen-3/4 Small Block V8 .045in. MLS Cylinder Head Gasket; 4.100in. Bore
  • The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes
  • The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
  • Requires less clamp load creating less bore distortion
  • Conforms load distribution across the sealing area
  • Embossed Outer Layers Coated w/Viton

The Cometic Gasket GM LS1 SB 4.100 inch Bore .045 inch MLS Head Gasket is engineered with multiple embossed layers of stainless steel, designed to provide superior sealing performance for high-output engines. The outer layers are coated with Viton, a heat-resistant elastomer rubber capable of withstanding temperatures up to 482°F, ensuring durability in harsh sealing environments. This gasket is ideal for applications involving aluminum heads to aluminum blocks or aluminum heads to cast iron blocks, as it can withstand shearing forces and maintain a reliable seal under demanding conditions. The compressed operating thickness of 0.045 inches allows for optimal fitment and performance, reducing the need for additional sealants and minimizing bore distortion. The center shim layer is made from uncoated stainless steel, which can be customized to achieve different thickness requirements, providing flexibility for various engine configurations. These MLS gaskets are designed to distribute load evenly across the sealing surface, enhancing sealing integrity and engine longevity. Suitable for GM LS1, LS2, LS3, LS6 Gen-3/4 Small Block V8 engines with a 4.100-inch bore, this gasket ensures a secure and reliable seal in high-performance applications. The embossed outer layers meet the demands of diverse surface finishes and load conditions, making it a reliable choice for both stock and modified engines. Whether rebuilding or upgrading your engine, the Cometic MLS Head Gasket offers a combination of strength, flexibility, and resistance that meets the rigorous demands of modern high-output engines.

Features:

  • Embossed outer layers of stainless steel meet the demands of harsh sealing environments and surface finishes
  • Viton coating on outer layers provides heat resistance up to 482°F
  • Uncoated stainless steel center shim layer can be varied to accommodate different thickness requirements
  • Design requires less clamp load, reducing bore distortion
  • Conforms load distribution across the sealing area for enhanced sealing performance
  • Suitable for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks