Mopar 361 383 440 Remflex 6002 Exhaust Manifold Gaskets 1957 - 1980 # REM6002Mopar 361 383 440 Remflex 6002 Exhaust Manifold Gaskets 1957 1980 # REM6002 Exhaust Header Gaskets, Graphite, Rectangular Port, Chrysler, Dodge, Plymouth, Big Block, Pair Port Style: Rectangular Gasket Material: Graphite Port Height (in): 1. 375 in. Port Width (in): 1. 875 in. Thickness (in): 0. 125 in. Quantity: Sold as a pair. Remflex exhaust header gasket sets feature 100 percent flexible graphite construction that's effective up to 3,000 degrees