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Cometic C5641-040 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

C5641-040
10 reviews
Sale Price

$100.59

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C5641-040 is a 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 precision gasket features a .040" compressed thickness and is designed to accommodate a 4.600" bore diameter.

Key Features:

  • Multi-layer steel construction provides superior sealing and durability under extreme pressures and temperatures
  • .040" (1.0mm) compressed gasket thickness for precise compression ratio tuning
  • 4.600" bore diameter designed for big block V8 applications
  • Includes 2 slotted lifter valley bolt holes for proper oil control and engine block sealing
  • Engineered for Gen-IV big block marine and high-performance applications
  • MLS technology allows for engine movement and thermal expansion while maintaining seal integrity

Cometic's MLS gaskets are constructed from multiple layers of stainless steel with a proprietary coating that provides excellent reusability and resistance to erosion. The embossed design ensures proper compression around combustion chambers and fluid passages. This gasket is ideal for high-performance marine engines, racing applications, and builds requiring precise compression control.

Products specifications

Prop 65

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

Material

Multi-layer Steel

Good price, didn't see a place to put in coupon

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Trustworthy seller. This is my second order. Got it quickly. good job!

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Order shipped 2 days after ordered <br>and hey gave me a tracking number which is cool<br>lets see hoe fast it will come

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Price was the lowest for the product that I wanted. That's including shipping price, which was still cheaper. Will definitely look into other products from them.

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