Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S.A. and are machine surfaced. These header flanges are specifically made for the 4.2L Vortec I-6 found in a variety of 2005-2009 GM SUV's.
Port Size: 1.719"
We carry over 250 different header flange designs, so if you don't see the flange you're looking for, talk with one of our tech reps about custom header flange cutting.
Flanges Sold Separately
