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Header Gaskets - Ultra-Seal - 396-454 Chevrolet Big Block Mark IV 1965-90

Mr. Gasket, Ultra-Seal Material, Square Ports, 2.09"

PART# 5913

$26.81   Suggested Retail
$24.13   Your 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 OE replacement, high performance street, drag race and oval track use.

Specs

BrandMr. Gasket
Collector Gaskets IncludedNo
Emission Code3
EngineChevrolet Big Block Mark IV
Gasket LineUltra-Seal
MaterialUltra-seal
Port ShapeSquare
Port Size2.09" x 2.09"
Product TypeHeader Gaskets
Thickness.062"
WarrantyLimited 90 Day Warranty
Weight0.4400
Part Number5913

Emissions

This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

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