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Cometic C5640-051 GM/Mercury Marine Gen-IV MLS Cylinder Head Gasket Bore - 4.580 051

Part of: Cometic MLS Cylinder Head Gasket Bore Honda

Other options in this family: Cometic C4311-040 Cometic C4251-030 Cometic C4232-030 Cometic C4962-028 Cometic C5434-051

Manufacturer

Picture for manufacturer Cometic

Part Number

C5640-051
5 reviews
Sale Price

$103.73

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C5640-051 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 .051-inch compressed thickness and is designed to accommodate a 4.580-inch bore diameter.

Key Features:

  • Multi-layer steel (MLS) construction for superior sealing and durability
  • .051-inch (1.3mm) compressed gasket thickness
  • 4.580-inch bore diameter for proper cylinder sealing
  • Includes 2 slotted lifter valley bolt holes for Gen-IV block compatibility
  • Engineered for marine and high-performance applications
  • Provides excellent resistance to extreme temperatures and pressures

Cometic's MLS gasket technology uses multiple layers of stainless steel with a Viton rubber coating to create a superior seal that withstands the demanding conditions of marine and performance engines. The slotted lifter valley bolt design ensures proper installation and compatibility with GM Gen-IV block configurations. This gasket is ideal for both stock and modified big block marine applications where reliability and performance are critical.

Products specifications

Prop 65

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

Material

Multi-layer Steel

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