Precision laser cut from 3/8" thick steel, our header flanges are manufactured in the U.S. and are machine surfaced.
Port Size: 2.40"

Precision laser cut from 3/8" thick steel, our header flanges are manufactured in the U.S. and are machine surfaced.
Port Size: 2.230"

Round Port SBC Gen II LT1 Steel Header Flange-
Port Size: 1.630"

Precision laser cut from 3/8" thick steel, our header flanges are manufactured in the U.S. and are machine surfaced.
Port Size: 1 3/4" and 2" ports available

This precision laser cut Chevy 3.4 Liter V6 header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the Chevy 3.4 Liter V6 head.

This precision laser cut Chevy 3.4 Liter V6 header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the Chevy 3.4 Liter V6 head.

This precision laser cut Chevrolet LT5 header flange is cut from 3/8" thick 1018 cold rolled steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the Chevrolet LT5 head.

Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the GM Chevy 7.0L 427ci LS7. This flange has D port and can be used with LS1, LS2, LS6, LS7, LS9, and most other LSX applications.

Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. These header flanges are specifically made for the small block Chevy 18 degree head.

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 Small Block Chevy LT-1 5.7L engines.

These Small Block Chevy precision laser cut 3/8" thick mild steel header flanges are manufactured in the U.S. and are machine surfaced. Sold separately.This flange for a small block Chevy, will accomodate a 1 5/8" primary tube.