Big Block Mopar (383-440) Round Port Stainless Header Flange

Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for stock port 383-440 CID Mopar engines.�

Port Size: 2", 2 1/8", and 2 1/4" port sizes available

1/2" Thick flange available in the 2" round port configuration; great for turbo applications, high temperature racing, or even just to help prevent warping.

We carry over 250 different header flange designs, so if you don't see the flange you're looking for, talk with one our tech reps about custom header flange cutting.

Flanges sold separately.