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 6-cylinder boxer engine of all Porsche 911 variants from 1976-1983.
Stock Port Size: 1 3/4" Round Port
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.
Call and ask for more information regarding just a single flange.
Flanges Sold As a Set
