Chevrolet 3.8L/4.3L 18 Degree V6 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 Chevrolet Racing-style 18 Degree V6 cylinder heads. Aftermarket heads may also utilize the stock bolt pattern.

Port Size: 1.88"

Preformed Flange Stubs are 2"-3" in length, and are formed to perfectly fit the non-round port in the flange. Stubs drastically reduce overall build time and increase builder's efficiency.

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.