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Pontiac Header Flanges

Our stainless Pontiac header flanges are precision laser cut from .375 stainless to our exacting specifications. We carry over 250 different header flanges designs. Many of the popular models come in optional primary tube port sizes. They come pre-surfaced and ready for your header building project. If you don't see the flange your looking for, talk with one of our tech reps about custom header flange cutting.

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Pontiac 400/455 Round Port Stainless Header Flange
Pontiac 400/455 Round Port Stainless Header Flange
Our Price: $59.95

Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the Pontiac 400/455 cubic inch blocks used in a wide variety of Pontiac vehicles from 1955-1976.
Port Size: 1.865", 2.000"
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Pontiac 400/455 Oval Port Stainless Header Flange
Pontiac 400/455 D-Port Stainless Header Flange
Our Price: $59.95

Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the Pontiac 400/455 cubic inch blocks used in a wide variety of Pontiac vehicles from 1955-1976.
Port Size:1.801"
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Pontiac Ram Air IV Stainless Header Flange
Pontiac Ram Air IV Stainless Header Flange
Our Price: $59.95

Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the rare Pontiac Ram Air IV heads, as well as aftermarket applications**
Port Size: 2.253"
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Pontiac Ram Air V Stainless Header Flange
Pontiac Ram Air V Stainless Header Flange
Our Price: $59.95

Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for the ultra-performance Pontiac Ram Air V engines found on the GTO and Firebird in 1969.
Port Size: 2.188"
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