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Cometic C5639-086 MLS Cylinder Head Gasket GM/Mercury Marine Gen-IV Big Block V8 4.530" Bore

Manufacturer

Picture for manufacturer Cometic

Part Number

C5639-086
6 reviews
Sale Price

$145.67

Estimated ship date Friday, November 27

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Product Details

The Cometic C5639-086 is a premium multi-layer steel (MLS) cylinder head gasket engineered specifically for GM/Mercury Marine 1050 Gen-IV Big Block V8 engines. This high-performance gasket features a .086" (2.18mm) compressed thickness and a 4.530" bore diameter, providing exceptional sealing capability for marine and high-performance applications.

Key Features:

  • Multi-layer steel construction for superior sealing and durability
  • .086" compressed gasket thickness
  • 4.530" bore diameter designed for Gen-IV Big Block V8 engines
  • Includes two slotted lifter valley bolt holes for proper installation
  • Compatible with GM/Mercury Marine 1050 Gen-IV applications
  • Engineered to withstand extreme cylinder pressures and temperatures

Cometic's MLS gaskets utilize multiple layers of stainless steel with specialized coatings to create a superior seal that maintains integrity under demanding marine and performance conditions. The precision-engineered design ensures proper compression and sealing around combustion chambers, water passages, and oil galleries.

Products specifications

Prop 65

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

Material

Multi-layer Steel

Glad to find replacement knobs...hope they fit.

Good prices and easy order process

Quick and easy shopping. I found what I needed very easily and it's on it's way.

Do not have part yet so really nothing to say accept site was user friendly

Autoplicity has a great selection of parts, great companies and great prices. Shipping was very fast and payment very easy. Will be shopping here in the future.

Easy and fast. Order arrived very fast. Thanks.

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