Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 2.40 Inch Mr Gasket Electrical & Ignitions - Ignition Systems - Distributor Outside Diameter: 4

Outside Diameter: 4

the Addict 942B series is your companion in defining the journey ahead

5 Inch of 1 Inch-14 right hand threads on the shank

gasoline and diesel engines

This kit comes with the pre-crimped wiring harness

Ultra-Seal Header Gaskets Fits 1965-1990 Chevrolet 396-454 Mark IV Big Block Round Ports, 2.40 Inch Mr Gasket Electrical & Ignitions - Ignition Systems - Distributor Outside Diameter: 4Manufactured 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