Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Square Port, 1.85 Inch x 1.90 Inch Mr Gasket

Part #: 5910

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.Withstands Intense Exhaust HeatGraphite-Impregnated FacingSteel Expanded Metal CoreSuperior Tensile StrengthResists DeterioratingAnti-stick PropertiesEasy Removal For DisassemblyDetails:Collector Gaskets Included: NoEmission Code: 5Finish: FlatGasket Line: Ultra-SealMaterial: Ultra-sealPort Shape: SquarePort Size: 1.85 x 1.90Warranty: Manufacturer's Limited 90 Day Warranty

Features:

• Withstands Intense Exhaust Heat
• Graphite-Impregnated Facing
• Steel Expanded Metal Core
• Superior Tensile Strength
• Resists Deteriorating
• Anti-stick Properties
• Easy Removal For Disassembly

Exhaust Manifold / Header Gasket - Ultra-Seal - 1.850 x 1.900 in Square Port - Steel Core Laminate - Big Block Chevy - Pair