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Cometic BB 4.630in Bore .080 inch Chevy Mark IV Big Block (396 / 402 / 427) MLS Head Gasket

SKU: CGSC5331-080

Head Gaskets

CG Head Gaskets

Cometic BB 4.630in Bore .080 inch Chevy Mark IV Big Block (396 / 402 / 427) MLS Head Gasket

SKU: CGSC5331-080

Head Gaskets

CG Head Gaskets

A$502.09
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel

Product Overview

Cometic Head Gaskets are developed with the performance enthusiast in mind. With so many individual requirements for each motor Cometic offers a number of options to suit your specific motor and needs. *MLS* The Cometic MLS gasket is comprised of three layers of Stainless Steel. Cometic uses Stainless steel for increased strength, it’s ability to rebound and corrosion resistance. The outer layers of the gasket are embossed and coated on both sides with a flouroelastomer rubber based material (Viton) designed to meet the demands of a variety of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 2500C or 4820F. The center or shim layer of the gasket is comprised of an uncoated Stainless Steel layer, which can be varied to accommodate multiple thickness requirements. The MLS gasket is ideal for both aluminum heads to cast iron blocks and aluminum heads to aluminum blocks. The composition of MLS will also withstand the shearing forces created by aluminum heads on cast iron blocks. No re-torque is necessary. By design the MLS gasket promotes an even torque load across the sealing surface allowing for measurable reduced bore distortion. *CFM-20* A perforated steel core with an elastomer surface is ideal for head gaskets allowing heat to be drawn evenly across the gasket surface while providing maximum sealing characteristics when exposed to coolants and oils. *COPPER*


Features and Benefits

  • Embossed Outer Layers Coated w/Viton
  • Requires less clamp load creating less bore distortion
  • Conforms load distribution across the sealing area
  • 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

Product Details

Year Make
Bore Diameter:4.630in
Description:Chevrolet Mark-IV Big Block V8 Cylinder Head Gasket
Engine Block Configuration:Lower 3 Open
Engine Make/Size:GM Gen II/ Mark IV Big Block
Engine:GM Gen II/ Mark IV Big Block V8
Part Number:cgsC5331-080
Position:Left or Right
Prop 65 (C, R or CR):CR
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 Yes/No:Yes
Thickness:.080in
Title:Cometic Gaskets - Chevrolet Mark-IV Big Block V8 Cylinder Head Gasket - C5331-080
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

Engine Cylinder Head Gasket

Data: v4.2 - Upd: 2026-09-27 16:29:01

Features

  • Conforms load distribution across the sealing area
  • Embossed Outer Layers Coated w/Viton
  • Requires less clamp load creating less bore distortion
  • 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
C5331-080
Product Attributes - Part Type
Head Gaskets
Product Attributes - Product Line
Cometic MLS Head Gaskets
Product Attributes - UPC
191070016562
Product Attributes - Bore (in.)
4.630 in.
Product Attributes - Bore (mm)
117.602mm
Product Attributes - Gasket Material
Multi-layer stainless steel
Product Attributes - Compressed Thickness (in.)
0.080 in.
Product Attributes - Compressed Volume (cc)
22.072cc
Product Attributes - Lock Wire
No
Product Attributes - Quantity
Sold individually.

Reference Information

Brand Name/s Cometic Gasket
StreetFX SKU cgsC5331-080
SFX Item ID 4161802
Supplier Item Code 4161802
Manufacturer SKU C5331-080
Manufacturer UPC 191070016562
Alternative References CAGC5331-080, CGT-C5331-080, 4.630in

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

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