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Cometic C5640-086 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

C5640-086
6 reviews
Sale Price

$148.68

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C5640-086 is a high-performance 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 4.580-inch bore diameter and a compressed thickness of .086 inches, providing exceptional sealing capabilities for high-performance marine and automotive applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior strength and durability
  • 4.580-inch bore diameter designed for Gen-IV Big Block V8 engines
  • .086-inch compressed thickness for optimal sealing
  • Includes 2 slotted lifter valley bolt holes for proper fitment
  • Engineered for GM and Mercury Marine 1050 cubic inch applications
  • Provides excellent resistance to extreme temperatures and pressures
  • Manufactured to OEM specifications with precision tolerances

Cometic's MLS gasket technology uses multiple layers of stainless steel with specialized coatings to create a reliable seal that can withstand the demanding conditions of high-performance engines. The slotted lifter valley design ensures proper alignment and sealing in the critical valley area, preventing oil leaks and maintaining consistent compression across all cylinders.

Products specifications

Prop 65

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

Material

Multi-layer Steel

Everything arrived well packaged and in good order... It was shipped promptly, but hey, no accounting for the snow storm in the NW... I think UPS calls it an "act of God"... Thanks

GREAT PRICES AND COMMUNICATION!!!! HIGHLY RECOMMENDED STAFF AND PRODUCTS!!!!!

My Superchips Cortex arrived within a few days of order and by far was the best price arround. Product arrived in perfect condition and worked as described. Great deal. Order #10984

Thanks again! Best prices I found on the web! Fast shipping Would definitely buy from again!

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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