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Mr. Gasket Copper Seal Header Gaskets

Fits 1965-1990 Chevy 396-454 Big Block with Round Ports

PART# 7157MRG

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$45.99   Suggested Retail
$37.25   Holleydays Price
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Overview

Mr. Gasket CopperSEAL header gaskets are a high quality copper gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications.

Features:

  • Manufactured from “Dead Soft” (solid) .043" thick copper material
  • .051" embossment around each exhaust port to seal irregular surfaces. Total gasket thickness .094"
  • Provides excellent sealing and durability
  • Conforms to and seals minor surface irregularities
  • For high performance street, drag race, oval track and turbocharged (extreme heat) applications

Specs

BrandMr. Gasket
Collector Gaskets IncludedNo
Emission Code5
EngineChevrolet Big Block Mark IV
Gasket LineCopper-Seal
MaterialCopper
Port ShapeRound
Port Size1.92"
Product TypeHeader Gaskets
Thickness.094"
WarrantyLimited 90 Day Warranty
Weight1.0000
Part Number7157MRG

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

Warranty Information

Limited 90 Day Warranty: See Details

Applications

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        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.

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