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Mr. Gasket Ultra-Seal Header Gaskets

Fits 1965-1990 Chevrolet 396-454 Big Block. Modified Round Ports, 2.40 Inch

PART# 5947

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$40.12   Suggested Retail
$32.50   Holleydays Price
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Overview

Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.

Features:

  • Manufactured from high-temperature steel core/graphite faced exhaust material
  • Expanded steel core provides stability and maximum torque retention to eliminate gasket failure
  • Graphite impregnated facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head
  • Conforms to and seals minor surface irregularities
  • Can be trimmed if necessary for modified port applications
  • For OE replacement, high performance street, drag race and oval track use

Specs

BrandMr. Gasket
Collector Gaskets IncludedNo
Emission Code5
EngineChevrolet Big Block Mark IV
Gasket LineUltra-Seal
MaterialUltra-seal
Port ShapeRound
Port Size2.40"
Product TypeHeader Gaskets
Thickness.062"
WarrantyLimited 90 Day Warranty
Weight0.3800
Part Number5947

Emissions

5

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.

Warranty Information

Limited 90 Day Warranty: See Details
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       X  Holleydays 2020 20% off and DD
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