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Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .056in MLS Cylinder Head Gasket - 4.630in Bore

SKU: CGSC5434-056

Head Gaskets

CG Head Gaskets...

Cometic Chevrolet Mark-IV - GM Gen-V/VI Big Block V8 .056in MLS Cylinder Head Gasket - 4.630in Bore

SKU: CGSC5434-056

Head Gaskets

CG Head Gaskets...

A$489.41
LOW STOCK! Est Ship 4-7 days. HURRY! LOW STOCK. This item is in limited stock at one of our 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

Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0.036". World Products Man-o-War Block. Cometic MLS (Multi-Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two materials. MLS gaskets have increased strength because they are comprised of multiple layers of stainless steel; which also creates the ability to rebound and resist corrosion. The outer layers are embossed and coated on both sides with Viton (a flour elastomer rubber based material that is heat resistant to 250 C/ 482 F). Viton is designed to meet the demands of a variety of harsh sealing environments, load conditions, and surface finishes. The center or shim layer is uncoated stainless steel, which can be varied to accommodate multiple thickness requirements.


Features and Benefits

  • Embossed Outer Layers Coated w/Viton

Product Details

Description:Chevrolet Mark-IV; GM Gen-V/VI Big Block V8 Cylinder Head Gasket
Engine Make/Size:GM Gen V/VI Big Block V8
Part Number:cgsC5434-056
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 .056 in MLS Cylinder Head Gasket, 4.630 in Bore, For Aftermarket Heads - Undersized Water Ports to Allow for Customization
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: 2026-10-14 00:07:14

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
C5434-056
Product Attributes - Part Type
Head Gaskets
Product Attributes - Product Line
Cometic MLS Head Gaskets
Product Attributes - UPC
00191070035440
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.)
0.056 in.
Product Attributes - Compressed Volume (cc)
15.450cc
Product Attributes - Lock Wire
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Designed for use with Brodix Big Duke/Big Brodie heads.

Reference Information

Brand Name/s Cometic Gasket
StreetFX SKU cgsC5434-056
SFX Item ID 4169058
Supplier Item Code 4169058
Manufacturer SKU C5434-056
Manufacturer UPC 191070035440
Alternative References CGT-C5434-056, .056in, 4.630in

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454

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