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1965-1990 Mr Header Gaskets Chevrolet 396-454 Mark IV Square Ports 1.85 Inch x 1.90 Inch

Item EK-61-878107-1
38 Reviews of Mr. Gasket
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$46.09

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      Product Information

      Features, Description, Q&A

      Features

      • Manufactured from high-temperature steel core with a graphite-faced exhaust material
      • Expanded steel core provides stability and maximum torque retention to eliminate gasket failure
      • Graphite facing offers 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
      • Material Ultra-Seal
      • Thickness .062 IN
      • Port shape round
      • Port size 1.92 IN
      • Category exhaust
      • Gasket line Ultra-Seal
      • Part type exhaust manifold gasket set
      • Product type header gaskets
      • Sub category gaskets and sealing systems
      • Engine Chevrolet Big Block Mark IV
      • Emission code 5
      • Collector gaskets included no
      • Weight 0.44
      • Warranty manufacturer's limited 90-day warranty
      • Fits Chevrolet and GMC vehicles with Chevrolet Big Block Mark IV engine from 1965 to 1990

      Description

      High-Quality Performance. The Mr. Gasket 1965-1990 Big Block Header Gaskets provide a reliable seal between the exhaust headers and the cylinder head to prevent leaks and maintain optimal engine performance. Designed for original equipment replacement as well as high-performance street and racing applications, these gaskets ensure long-lasting durability and efficient exhaust flow.

      Construction and Appearance. Built with a high-temperature steel core and a graphite facing, these gaskets feature excellent heat resistance combined with efficient thermal conductivity. The expanded steel core enhances stability and torque retention, while the graphite facing helps transfer heat away from the cylinder head and seals minor surface irregularities for a secure fit. The gasket thickness is .062 inches with a round port shape sized at 1.92 inches.

      Installation. Installation fits directly onto the cylinder head and header flanges without drilling. The gasket can be trimmed if necessary to fit modified port applications.

      Warranty. This product includes a manufacturer's limited 90-day warranty.

      Application. Specifically designed for Chevrolet and GMC vehicles equipped with the Chevrolet Big Block Mark IV engine from 1965 to 1990, this gasket suits a wide range of classic and performance vehicles.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.5

      Reviews of Mr. Gasket Classic Exhaust Products (38)

      Questions & Answers

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