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Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .051in MLS Exhaust Mani Gasket Set-2.265in Round Port

SKU: CGSC5251-051

Header and Exhaust Manifold Gaskets

CG Exhaust Gaskets...

Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .051in MLS Exhaust Mani Gasket Set-2.265in Round Port

SKU: CGSC5251-051

Header and Exhaust Manifold Gaskets

CG Exhaust Gaskets...

A$276.42
IN STOCK! Est Ship 3-7 Days days. In stock at 1 location (more than 10 available)

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Description

The Cometic MLS gasket is comprised of three to five layers of stainless steel. Cometic uses stainless steel for increased strength, its ability to rebound and resist corrosion. The outer layers of the gasket are embossed and coated on both sides with a Viton rubber material designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 250°C or 482°F.

Product Overview

The Cometic MLS gasket is comprised of three to five layers of stainless steel. Cometic uses stainless steel for increased strength, its ability to rebound and resist corrosion. The outer layers of the gasket are embossed and coated on both sides with a Viton rubber material designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 250°C or 482°F.


Features and Benefits

  • Requires No Sealants

Product Details

Description:Chevrolet Mark-IV; GM Gen-V/VI Big Block V8 Exhaust Manifold Gasket Set
Part Number:cgsC5251-051
Prop 65 (C, R or CR):CR
Prop 65 - Short Label:Prop_65.jpg
Prop 65 Warning Label:Prop_65.jpg
Prop 65 Yes/No:Yes
Title:Cometic Gasket Automotive Chevrolet Mark-IV; GM Gen-V/VI Big Block V8 .051 in MLS Exhaust Manifold Gasket Set, 2.265 in Round Port
WARNING CA Proposition 65 Message:The state of California has determined that certain chemicals used in the manufacture of this product have been known to cause cancer and birth defects. For more information; visit www.p65Warnings.ca.gov
WARNING CA Proposition 65:Yes

Part Type

Exhaust Manifold Gasket Set

Data: v4.2 - Upd: 2026-10-30 13:35:50

Features

  • Conforms load distribution across the sealing area
  • Requires less clamp load creating less bore distortion
  • Requires No Sealants
  • The center or shim layer is an uncoated stainless steel layer which can be varied to accommodate multiple thickness requirements
  • The embossed outer layers of the gaskets meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes

Specifications

Product Attributes - Brand
Cometic
Product Attributes - Manufacturer's Part Number
C5251-051
Product Attributes - Part Type
Header and Exhaust Manifold Gaskets
Product Attributes - Product Line
Cometic MLS Exhaust Gaskets
Product Attributes - UPC
191070205782
Product Attributes - Port Style
Round
Product Attributes - Gasket Material
Multi-layer steel
Product Attributes - Port Height (in.)
2.250
Product Attributes - Port Width (in.)
2.250
Product Attributes - Thickness (in.)
0.051
Product Attributes - Quantity
Sold as a pair.

Reference Information

Brand Name/s Cometic Gasket
StreetFX SKU cgsC5251-051
SFX Item ID 4168993
Supplier Item Code 4168993
Manufacturer SKU C5251-051
Manufacturer UPC 191070205782
Alternative References CGT-C5251-051, .051in, Set-2.265in

Brochures

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1965
    Ending Year1970
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
  • MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1991
    Ending Year1995
    Engine TypeV8
    Engine FamilyChevy big block Gen V
    Engine Size7.4L/454
  • MakeCHEVROLET
    Beginning Year1996
    Ending Year2000
    Engine TypeV8
    Engine FamilyChevy big block Gen VI
    Engine Size7.4L/454

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