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Cometic C5640-056 GM/Mercury Marine Gen-IV Big Block MLS Cylinder Head Gasket - V8

Part of: Cometic GM Big Block MLS Cylinder Head Gasket Bore

Other options in this family: Cometic C5334-040 Cometic C5333-089 Cometic C5755-080 Cometic C5817-040 Cometic C5640-070

Manufacturer

Picture for manufacturer Cometic

Part Number

C5640-056
7 reviews
Sale Price

$136.53

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C5640-056 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM and Mercury Marine Gen-IV Big Block V8 engines with a 1050 cubic inch displacement. This high-performance gasket features a .056-inch compressed thickness and is designed to accommodate a 4.580-inch bore diameter.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior strength and durability
  • 0.056-inch compressed thickness provides optimal sealing and compression
  • 4.580-inch bore diameter engineered for Gen-IV Big Block applications
  • Includes two slotted lifter valley bolt holes for proper installation
  • Designed for both GM automotive and Mercury Marine applications
  • MLS technology provides improved recovery and reusability compared to composite gaskets

Cometic MLS gaskets are manufactured using multiple layers of stainless steel with a Viton rubber coating, providing exceptional resistance to extreme temperatures and pressures. The advanced construction allows the gasket to recover from compression cycles while maintaining a reliable seal, making it ideal for high-performance and marine engine builds.

Products specifications

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Material

Multi-layer Steel

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In a rush to get my car up and running, Autoplicity had the best price on the items I needed, and in stock as well as shipped quickly. Just what I was looking for, thanks!

Great price. Minor problems with shipping because of UPS (dropped box and broke part, late delivery). Autoplicity sending me out replacement part.

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