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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

Exhaust Gasket Set

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.

Additional Information

Chevrolet Mark-IV; GM Gen-V/VI Big Block V8 .051in. MLS Exhaust Manifold Gasket Set; 2.250in. Round Port

Part Type

Exhaust Manifold Gasket Set

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.

Additional Application Notes
• Port Size: 2.265 Port Shape: Round Material: MLS Compressed Thickness: .051
• 0.051in. Multi-Layer Steel; 2.250in. Round Port
• Port Size: 2.265 Port Shape: Round Material: MLS Compressed Thickness: .051 0.051in. Multi-Layer Steel; 2.250in. Round Port
• 0.051in. Multi-Layer Stee; 2.250in. Round Port

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 18:49:27

Data: v4.2 - Upd: 2026-11-07 21:34:33

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

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

Description:Chevrolet Mark-IV; GM Gen-V/VI Big Block V8 Exhaust Manifold Gasket Set
Part Number:cgsC5251-051
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

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Cometic Gasket, Cometic, Cometic Gasket Automotive, Cometic Gasket Marine, Cometic Gasket Powersports, COMETIC GASKETS, Cometic Powersport Gaskets
StreetFX SKU cgsC5251-051
SFX Item ID 4168993
Accounting SKU cgs-C5251-051
Manufacturer SKU C5251-051
Manufacturer UPC 191070205782
Alternative References C5251-051, CGT-C5251-051

Exhaust Gaskets, Headers, Multi-Layer Steel, Round Port, Chevrolet, Big Block V8, Pair

Cometic Gasket's commitment to cutting-edge technology has produced superior-quality gaskets like these Cometic MLS exhaust gaskets. They are constructed from multiple layers of strong stainless steel that has excellent rebound ability and corrosion-resistant characteristics. Outer layers are coated with a heat-resistant, rubber-based material to create a seal that can withstand a variety of sealing and load conditions and surfaces. Cometic MLS exhaust gaskets are ideal for all types of head and block material and their design promotes an even torque load across the sealing surface, allowing for measurably reduced bore distortion.

Product Attributes
BrandCometic
Manufacturer's Part NumberC5251-051
Part TypeHeader and Exhaust Manifold Gaskets
Product LineCometic MLS Exhaust Gaskets
UPC191070205782
Port StyleRound
Gasket MaterialMulti-layer steel
Port Height (in.)2.250
Port Width (in.)2.250
Thickness (in.)0.051
QuantitySold as a pair.

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