GM 2.5L Iron Duke Mild Steel Header Flange

Precision laser cut from 3/8" thick Mild Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the 2.L I-4 'Iron Duke' engine. These engines were commonly found in many GM cars from 1979-1986, along with several Jeep & AMC applications, including AMC Concord, AMC Eagle, Buick Century Custom, Buick Skylark, Chevrolet Citation, Chevy Monza 2+2, Oldsmobile Cutlass Ciera, Oldsmobile Omega, Pontiac 6000, Pontiac Fiero, Pontiac Grand Am, and more.

These are compatible with Fel Pro MS90564 exhaust header gaskets.

Port Size: 1 5/8" or 1 3/4" Available

We carry over 450 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.