Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 1.92 Inch Mr Gasket

Part #: 5911

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.Has A Steel Core With Graphite FacingGraphite Facing Has Excellent Thermo-conductivityCan Be Trimmed If Necessary For Modified Port AppDetails:Collector Gaskets Included: NoEmission Code: 5Gasket Line: Ultra-SealMaterial: Ultra-sealPort Shape: RoundPort Size: 1.92Warranty: Manufacturer's Limited 90 Day Warranty

Features:

• Has A Steel Core With Graphite Facing
• Graphite Facing Has Excellent Thermo-conductivity
• Can Be Trimmed If Necessary For Modified Port App

Exhaust Manifold / Header Gasket - Ultra-Seal - 1.920 in Round Port - Steel Core Laminate - Big Block Chevy - Pair