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Cometic Chevrolet Gen-1 Small Block V8 .066in MLS Cylinder Head Gasket - 4.030in Bore

SKU: CGSC5399-066

Head Gaskets

CG Head Gaskets...

Cometic Chevrolet Gen-1 Small Block V8 .066in MLS Cylinder Head Gasket - 4.030in Bore

SKU: CGSC5399-066

Head Gaskets

CG Head Gaskets...

A$472.14
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

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

  • Embossed Outer Layers Coated w/Viton

Product Details

Description:Chevrolet Gen-1 Small Block V8 Cylinder Head Gasket
Engine Make/Size:Chevrolet Small Block Gen I
Part Number:cgsC5399-066
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 Gen-1 Small Block V8 .066 in MLS Cylinder Head Gasket, 4.030 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 00:04:28

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
C5399-066
Product Attributes - Part Type
Head Gaskets
Product Attributes - Product Line
Cometic MLS Head Gaskets
Product Attributes - UPC
00191070125721
Product Attributes - Bore (in.)
4.030 in.
Product Attributes - Bore (mm)
102.362mm
Product Attributes - Gasket Material
Multi-layer stainless steel
Product Attributes - Compressed Thickness (in.)
0.066 in.
Product Attributes - Compressed Volume (cc)
13.796cc
Product Attributes - Lock Wire
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Designed for use with Brodix heads.

Reference Information

Brand Name/s Cometic Gasket
StreetFX SKU cgsC5399-066
SFX Item ID 4170878
Supplier Item Code 4170878
Manufacturer SKU C5399-066
Manufacturer UPC 191070125721
Alternative References CGT-C5399-066, Gen-1, .066in, 4.030in

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1955
    Ending Year1957
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.3L/265
  • MakeCHEVROLET
    Beginning Year1957
    Ending Year1967
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.6L/283
  • MakeCHEVROLET
    Beginning Year1962
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.3L/327
  • MakeCHEVROLET
    Beginning Year1964
    Ending Year1967
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.4L/327
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.9L/302
  • MakeCHEVROLET
    Beginning Year1967
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.7L/350
  • MakeCHEVROLET
    Beginning Year1968
    Ending Year1973
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/307
  • MakeCHEVROLET
    Beginning Year1975
    Ending Year1976
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.3L/262
  • MakeCHEVROLET
    Beginning Year1976
    Ending Year2002
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size5.0L/305
  • MakeCHEVROLET
    Beginning Year1979
    Ending Year1982
    Engine TypeV8
    Engine FamilyChevy small block Gen I
    Engine Size4.4L/267

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