Patriot Header Flange - 0.375 in Thick - 2 in Round Port - Big Block Chevy - Pair Intake Manifold Gasket 875 in W x 19

875 in W x 19

launch and overrev

These are not thermostatically controlled

step-by-step instructions

oil thermostats

Patriot Header Flange - 0.375 in Thick - 2 in Round Port - Big Block Chevy - Pair Intake Manifold Gasket 875 in W x 19Patriot Exhaust H7899 Header Flange Chevrolet Big Block 396 502 Tube Diameter 1 3 4" 2" Same As Port. Precision machined header flanges Heavy duty 3 8" thick material Supplied with our premium head gaskets A wide variety of tube diameters and port shapes available; Patriot Exhaust products continue to offer the best value for the dollar of any brand in the industry. This year's product offering presents sixteen new applications for popular muscle cars