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Header Gaskets - Ultra-Seal - GM Small Block Gen V (LT1/LT4 Based) 2014-up

Mr. Gasket, Ultra-Seal Material, Oval Port GM Gen V LT1/LT4

PART# 5967

$28.83   Suggested Retail
$25.95   Your Price
Free Shipping on orders over $100*
In Stock  


• 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.


  • Fits 2014 & up GM Gen V LT1/LT4 Engines


BrandMr. Gasket
Collector Gaskets Included3
Emission Code3
EngineGM Small Block Gen V (LT1/LT4 Based)
Gasket LineUltra-Seal
Port ShapeOval
Port Size1.96" x 1.73"
Product TypeHeader Gaskets
WarrantyLimited 90 Day Warranty


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.

*Free Shipping & Handling only offered to the continental US on orders over $100.

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