Mopar V8 Hemi 426 - 528 Remflex Exhaust Header Gasket Set # REM6010MOPAR V8, Hemi, 426 ('64 '71), 528 ('00+), 1 27 32" x 1 29 32" Sq Port, For Header Applications, 2 Set Port Style: Square port Gasket Material: Graphite Port Height (in.): 1. 906 Port Width (in.): 1. 844 Quantity: Sold as a pair. Remflex Exhaust Header Gasket Sets Remflex exhaust header gasket sets feature 100 percent flexible graphite construction that's effective up to 3,000 degrees F, far exceeding any vehicle's exhaust system temperature. They