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Home > Header Components > Header Flanges

Header Flanges

We offer the finest in CNC laser cut header flanges. While most header flanges are made from 1/4" or 5/16" material, our header flanges are precision CNC lasercut from 3/8" material. We offer our flanges in 304 stainless steel or1018 cold rolled steel. The heavier materials we use to fabricate our flangesgreatly reduce the warping problems seen in other lighter flanges. These headerflanges are U.S. made.

Mild Steel Header Flanges

Mild Steel Header Flanges

Stainless Steel Header Flanges

Stainless Steel Header Flanges

Turbo Flanges

Turbo Flanges

Misc Flanges

Misc Flanges

Cobra Kit Car Flanges

Cobra Kit Car Flanges

Exhaust Trim Rings

Exhaust Trim Rings

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Header Flanges

Mild Steel Header Flanges
Stainless Steel Header Flanges
Turbo Flanges
Misc Flanges
Cobra Kit Car Flanges
Exhaust Trim Rings
    3 Bolt Collector Flange

    2 1/2" ID 3 Bolt Collector Flange

    $36.95
    3 1/2" ID 3 Bolt Collector Flange

    3 1/2" ID 3 Bolt Collector Flange

    3 1/2" ID 3 Bolt Collector Flange
    $36.95
    3" ID 3 Bolt Collector Flange

    3" ID 3 Bolt Collector Flange

    $36.95
    4" ID 3 Bolt Steel Collector Flange

    4" ID 3 Bolt Collector Flange- Mild Steel

    4" ID 3 Bolt Steel Collector Flange
    $33.95
    4-Bolt 304 SS Cobra Kit Car Collector Flange

    4-Bolt 304 SS Cobra Kit Car Collector Flange

    A
    This 4-Bolt collector flange is precision laser-cut from true American made 304 Stainless Steel, and is 3/8" thick. It is the perfect fit for any Cobra Kit Car application requiring a 4-bolt flange. The ports are available in 1 3/4", 1 7/8", and 2" diameter holes to accompany those sizes of tubing.
    $55.95
    4-Bolt 304 SS Cobra Kit Car Open Collector Flange

    4-Bolt 304 SS Cobra Kit Car Open Collector Flange

    D
    This 4-Bolt collector flange is precision laser-cut from true American made 304 Stainless Steel, and is 3/8" thick. These flanges are wide open to accompany tight-fit header tubes. The open hole allows for a larger tube size to be used in the same amount of space. It is the perfect fit for any Cobra Kit Car application requiring a 4-bolt flange. The ports are available in 2 and 2 1/8" diameter holes to accompany those sizes of tubing.
    $55.95
    4-Slot 304 SS Cobra Kit Car Collector Flange

    4-Slot 304 SS Cobra Kit Car Collector Flange

    B
    This 4-Bolt collector flange is precision laser-cut from true American made 304 Stainless Steel, and is 3/8" thick. These flanges have slot-holes for fine-tuning any header positioning your build may require. It is the perfect fit for any Cobra Kit Car application requiring a 4-bolt flange. The ports are available in 1 3/4" and 2" diameter holes to accompany those sizes of tubing.
    $55.95
    4-Slot Mild Steel Cobra Kit Car Collector Flange

    4-Slot Mild Steel Cobra Kit Car Collector Flange

    B
    This 4-Bolt collector flange is precision laser-cut from true American made Mild Steel, and is 3/8" thick. These flanges have slot-holes for fine-tuning any header positioning your build may require. It is the perfect fit for any Cobra Kit Car application requiring a 4-bolt flange. The ports are available in 1 3/4" and 2" diameter holes to accompany those sizes of tubing.
    $44.95
    Hemi Header Flange- Mild Steel

    426 Hemi Header Flange- Mild Steel

    These precision laser cut 3/8" thick mild steel header flanges are manufactured in the U.S. and are machine surfaced.
    $44.95
    5.7L Hemi (Left Bank) Mild Steel Header Flange

    5.7L Hemi (Left Bank) Mild Steel Header Flange

    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 Left bank of the 5.7L Hemi engines.
    Port Size: 1.696"
    $44.95
    5.7L Hemi (Left Bank) Stainless Header Flange

    5.7L Hemi (Left Bank) Stainless Header Flange

    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 left bank of the 5.7L Hemi engines.
    Port Size: 1.696"
    $78.95
    5.7L Hemi (Right Bank) Mild Steel Header Flange

    5.7L Hemi (Right Bank) Mild Steel Header Flange

    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 RIGHT bank of the 5.7L Hemi engines.
    Port Size: 1.696"
    $44.95
    5.7L Hemi (Right Bank) Stainless Header Flange

    5.7L Hemi (Right Bank) Stainless Header Flange

    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 right bank of the 5.7L Hemi engines.
    Port Size: 1.696"
    $78.95
    5.9L 12v Dodge Cummins Mild Steel Header Flange

    5.9L 12v Dodge Cummins Mild Steel Header Flange

    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 1st gen (1984-1998) Dodge 5.9L 12 valve engines.
    Port Size: 1.648"
    $67.95
    5.9L 12v Dodge Cummins Stainless Header Flange

    5.9L 12v Dodge Cummins Stainless Header Flange

    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 1stgen (1984-1998) Dodge 5.9L 12 valve engines.
    Port Size: 1.648"
    $111.95
    5.9L 24v Dodge Cummins Mild Steel Header Flange

    5.9L 24v Dodge Cummins Mild Steel Header Flange

    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 2nd gen (1998-2002) Dodge 5.9L 24 valve engines.
    Port Size: 1.880"
    $67.95
    5.9L 24v Dodge Cummins Stainless Header Flange

    5.9L 24v Dodge Cummins Stainless Header Flange

    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 Dodge 5.9L 24 valve engines.
    Port Size: 1.880"
    $111.95
    8-Bolt 304 SS Cobra Kit Car Collector Flange

    8-Bolt 304 SS Cobra Kit Car Collector Flange

    C
    This 8-Bolt collector flange is precision laser-cut from true American made 304 Stainless Steel, and is 3/8" thick. It is the perfect fit for any Cobra Kit Car application requiring an 8-bolt flange. The ports are available in 1 3/4" and 2" diameter holes.
    $55.95
    AMC AMX Javelin Rebel Mild Steel Header Flange

    AMC AMX Javelin Rebel Mild Steel Header Flange

    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 304-401 c.i. AMC V8 engines.
    Port Size: 1.838"
    $44.95
    AMC AMX Javelin Rebel Stainless Steel Header Flange

    AMC AMX Javelin Rebel Stainless Header Flange

    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 304-401 c.i. AMC V8 engines.
    $78.95
    Aston Martin V-12 Mild Steel Header Flange

    Aston Martin V-12 Mild Steel Header Flange

    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 Aston Martin V-12 6.0L engine.
    Port Size: 1.759"
    $39.95
    Aston Martin V-12 Stainless Header Flange

    Aston Martin V-12 Stainless Header Flange

    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 Aston Martin V-12 6.0L engine.
    $61.95
    Aston Martin V-8 Mild Steel Header Flange

    Aston Martin V-8 Mild Steel Header Flange

    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 Aston Martin V-8 4.3L/4.7L engine.
    Port Size: 1.881"
    $44.95
    Aston Martin V-8 Stainless Header Flange

    Aston Martin V-8 Stainless Header Flange

    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 Aston Martin V-8 4.3L/4.7L engine.
    $78.95
    Audi 1.8L 16v Mild Steel Header Flange

    Audi 1.8L 16v 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 the Audi 1.8L 16v engine.
    $44.95
    Audi 1.8L 16v Stainless Header Flange

    Audi 1.8L 16v Stainless Header Flange

    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 Audi 1.8L 16v engine.
    $78.95
    Audi 4.2L RS6 Mild Steel Header Flange

    Audi 4.2L RS6 Mild Steel Header Flange

    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 Audi RS6 4.2L engine.
    Port Size: 1.630"

    $44.95
    Audi 4.2L RS6 Stainless Header Flange

    Audi 4.2L RS6 Stainless Header Flange

    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 Audi RS6 4.2L engine.
    $78.95
    Big Block Chevy 5.0" Bore Spacing Stainless Header Flange

    Big Block Chevy 5.0" Bore Spacing Stainless Header Flange

    Precision laser cut from 3/8" thick 304 stainless, these header flanges are specifically made for the Big Block Chevy 5.0" Bore Spacing Stainless Heads
    $78.95
    Big Block Chevy 5.3 Bore Spacing Header Flange

    Big Block Chevy 5.3 Bore Spacing Header Flange

    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 Big Block Chevy head.

    We carry over 250 different header flange designs, so if you don't see the flange your looking for, talk with one of our tech reps about custom header flange cutting.

    Flanges Sold Separately
    $78.95
    BBC D Port header flange

    Big Block Chevy D Port Header Flange

    $78.95
    BBC D Port header flange

    Big Block Chevy D Port Header Flange

    $44.95
    Big Block Chevy Mild Steel Header Flange

    Big Block Chevy Mild Steel Header Flange

    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 Big Block Chevy head.
    $44.95
    BBC Single header flange

    Big Block Chevy Single Header Flange

    $27.95
    BBC Single header flange

    Big Block Chevy Single Header Flange

    Stainless Headers Mfg., Inc.
    $18.95
    BBC Square Port header flange

    Big Block Chevy Square Port Header Flange

    This precision laser cut Big Block Chevy Square Port header flange is 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 Big Block Chevy Square Port head.
    $78.95
    BBC Square Port header flange

    Big Block Chevy Square Port Header Flange

    $44.95
    Big Block Chevy Header Flange

    Big Block Chevy Stainless Header Flange

    $78.95
    Big Block Ford (429-460) Oval Port Mild Steel Header Flange

    Big Block Ford (429-460) Oval Port 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 all big block Ford engines with 385-series heads from 1968-1997, with the exception of the Cobra Jet models.
    Port Size: 1.868"
    $44.95
    Big Block Ford (429-460) Oval Port Stainless Header Flange

    Big Block Ford (429-460) Oval Port Stainless Header Flange

    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 all big block Ford engines with 385-series heads from 1968-1997, with the exception of the Cobra Jet models.
    Port Size: 1.868"
    $78.95
    Big Block Ford A460 Stainless Header Flange

    Big Block Ford A460 Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 2.130"
    $78.95
    Big Block Ford (429-460) Square Port Mild Steel Header Flange

    Big Block Ford C460 Square Port 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 all big block Ford engines with 385-series heads from 1968-1997, with the exception of the Cobra Jet models.
    Port Size: 2.341"
    $44.95
    Big Block Ford C460 Stainless Header Flange

    Big Block Ford C460 Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 2.341"
    $78.95
    Big Block Mopar (383-440) Stock Mild Steel Header Flange

    Big Block Mopar (383-440) 1 7/8" Stock Mild Steel Header Flange

    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 Big Block Mopar engines with a stock rectangular port.
    Port Size: 1.910"
    $44.95
    Big Block Mopar (383-440) Stock Stainless Header Flange

    Big Block Mopar (383-440) 1 7/8" Stock Stainless Header Flange

    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 Big Block Mopar engines with a stock rectangular port.
    Port Size: 1.910"
    $78.95
    Big Block Mopar (383-440) 2 1/4" Mild Steel Header Flange

    Big Block Mopar (383-440) 2 1/4" Mild Steel Header Flange

    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 Big Block Mopar engines with an extra-large rectangular port.
    Port Size: 2.263"
    $44.95
    Big Block Mopar (383-440) 2 1/4" Stainless Header Flange

    Big Block Mopar (383-440) 2 1/4" Stainless Header Flange

    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 Big Block Mopar engines with an extra-large rectangular port.
    Port Size: 2.263"
    $78.95
    Big Block Mopar (383-440) 2 1/8" Stainless Header Flange

    Big Block Mopar (383-440) 2 1/8" Stainless Header Flange

    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 Big Block Mopar engines with a large, 2 1/8" rectangular port.
    Port Size: 2.138"
    $78.95
    Big Block Mopar (383-440) 2" Mild Steel Header Flange

    Big Block Mopar (383-440) 2" Mild Steel Header Flange

    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 Big Block Mopar engines with a large rectangular port.
    Port Size: 2.010"
    $44.95
    Big Block Mopar (383-440) 2" Round Port 1/2" Thick Stainless Turbo Header Flange

    Big Block Mopar (383-440) 2" Round Port 1/2" Thick Stainless Turbo Header Flange

    Precision laser cut form 1/2" thick 304 Stainless Steel, our turbo header flanges are manufactured in the U.S. and are machine surfaced. These turbo header flanges are specifically made for stock port 383-440 CID Mopar engines.

    Port Size: 2" round port

    $106.95
    Big Block Mopar (383-440) 2" Stainless Header Flange

    Big Block Mopar (383-440) 2" Stainless Header Flange

    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 Big Block Mopar engines with a rectangular port.
    Port Size: 2.010"
    $78.95
    Big Block Mopar (383-440) Oval Mild Steel Header Flange

    Big Block Mopar (383-440) Oval Mild Steel Header Flange

    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 Big Block Mopar engines with an oval port.
    Port Size: 1.809"
    $44.95
    Big Block Mopar (383-440) Oval Stainless Header Flange

    Big Block Mopar (383-440) Oval Stainless Header Flange

    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 Big Block Mopar engines with an oval port.
    Port Size: 1.809"
    $78.95
    Big Block Mopar (383-440) Round Port Stainless Header Flange

    Big Block Mopar (383-440) Round Port Stainless Header Flange

    Precision laser cut form 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S. and are machine surfaced. These header flanges are specifically made for stock port 383-440 CID Mopar engines.

    Port Size: 2", 2 1/8", and 2 1/4" port sizes available

    $78.95
    Big Block Mopar (383-440) Stage VI Mild Steel Header Flange

    Big Block Mopar (383-440) Stage VI Mild Steel Header Flange

    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 Big Block Mopar engines with a large "D"-port.
    Port Size: 1.855"
    $44.95
    Big Block Mopar (383-440) Stage VI Stainless Header Flange

    Big Block Mopar (383-440) Stage VI Stainless Header Flange

    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 Big Block Mopar engines with a large "D"-port.
    Port Size: 1.855"
    $78.95
    BMW I-6 M50 Mild Steel Header Flange

    BMW I-6 M50 Mild Steel Header Flange

    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 BMW I-6 M50 engine, lovingly called the "Big Six".
    Port Size: 2.000"
    $67.95
    BMW I-6 M50 Stainless Header Flange

    BMW I-6 M50 Stainless Header Flange

    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 BMW I-6 M50 engine, lovingly called the "Big Six".
    $111.95
    BMW S50 B30 I-6 Stainless Header Flange

    BMW S50 B30 I-6 Mild Steel Header Flange

    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 BMW S50 B30 I-6 engines.
    Port Size: 1.443"
    $67.95
    BMW S50 B30 I-6 Stainless Header Flange

    BMW S50 B30 I-6 Stainless Header Flange

    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 BMW S50 B30 I-6 engines.
    $111.95
    BMW S54 Single Port Stainless Header Flange

    BMW S54 Single Port Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless Steel, our header flanges are manufactured in the U.S.A. and are machine surface. These header flanges are designed for the BMW S54 engine
    $27.95
    BMW Straight-6 M30 SOHC Mild Steel Header Flange

    BMW Straight-6 M30 SOHC Mild Steel Header Flange

    Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.SA. and are machine surfaced. These header flanges are specifically made for the BMW I-6 SOHC M30 engines.
    Port Size: 1.615"
    $67.95
    BMW Straight-6 M30 SOHC Stainless Header Flange

    BMW Straight-6 M30 SOHC Stainless Header Flange

    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 BMW I-6 SOHC M30 engines.
    $111.95
    Brad Anderson BA 5 Square Port Mild Steel Header Flange

    Brad Anderson BA 5 Square Port Mild Steel Header Flange

    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"
    $44.95
    Brad Anderson BA 5 Square Port Stainless Header Flange

    Brad Anderson BA 5 Square Port Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 2.230"
    $78.95
    Brad Anderson BA 6/8/TA1/TA1X Mild Steel Header Flange

    Brad Anderson BA 6/8/TA1/TA1X Mild Steel Header Flange

    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"
    $44.95
    Brad Anderson BA 6/8/TA1/TA1X Stainless Header Flange

    Brad Anderson BA 6/8/TA1/TA1X Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 2.230"
    $78.95
    Buick 455 Mild Steel Header Flange

    Buick 455 Mild Steel Header Flange

    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 Buick 455 c.i. engine.
    Port Size: 1.904"
    $44.95
    Buick 455 Stage III GSX Mild Steel Header Flange

    Buick 455 Stage III GSX Mild Steel Header Flange

    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 Stage III and Stage IV V-8 engine made by Buick specially for the GSX in 1970.
    Port Size: 2.015"
    $44.95
    Buick 455 Stage III GSX Stainless Header Flange

    Buick 455 Stage III GSX Stainless Header Flange

    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 Stage II and Stage IV V-8 engine made by Buick specially for the GSX in 1970.
    Port Size: 2.015"
    $78.95
    Buick 455 Stainless Header Flange

    Buick 455 Stainless Header Flange

    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 Buick 455 c.i. engine.
    Port Size: 1.904"
    $78.95
    Buick Nailhead Stainless Header Flange

    Buick Nailhead Header Flange

    Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. These Buick Nailhead header flanges are sold as a single flange, requires 2 flanges per head.
    $39.95
    Buick Nailhead Mild Steel Header Flange

    Buick Nailhead Header Flange

    $27.95
    Buick V-6 "Fireball" Mild Steel Header Flange

    Buick V-6 "Fireball" Mild Steel Header Flange

    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 V-6 Fireball engine made by Buick in 195, 225, and 231 cubic inch blocks from 1962-1981.
    Port Size: 1 .551"
    $39.95
    Buick V-6 "Fireball" Stainless Header Flange

    Buick V-6 "Fireball" Stainless Header Flange

    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 V-6 Fireball engine made by Buick in 195, 225, and 231 cubic inch blocks from 1962-1981.
    Port Size: 1 .551"
    $61.95
    Cadillac 500 Mild Steel Header Flange

    Cadillac 500 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 the Cadillac 500 engines. This flange has a rectangle port dimension of 1.700" by 1.675"
    Port Size: 1.931"
    $44.95
    Cadillac 500 Header Flange

    Cadillac 500 Stainless Header Flange

    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 Cadillac 500 engines.
    $78.95
    Chevrolet Colorado Vortec 2900 Stainless Header Flange

    Chevrolet Colorado Vortec 2900 Stainless Header Flange

    Precision laser cut from 3/8" thick mild steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 1.522"
    $78.95
    Chevrolet LT5 Stainless Header Flange

    Chevrolet LT5 Header Flange

    $78.95
    Chevrolet LT5 Mild Steel Header Flange

    Chevrolet LT5 Header Flange

    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.
    $44.95
    Chevrolet MBR 526 Hemi Head Stainless Header Flange

    Chevrolet MBR 526 Hemi Head Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 2.500"
    $78.95
    SBC 18 Degree Header Flange

    Chevy 18 Degree Small Block Header Flange

    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 small block Chevy 18 degree head.
    $78.95
    18 Degree Small Block Chevy Header Flange-Mild Steel

    Chevy 18 Degree Small Block Header Flange-Mild Steel

    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.
    $44.95
    Chevy 2.2L Stainless Header Flange

    Chevy 2.2L Header Flange

    $78.95
    Chevy 2.2L Mild Steel Header Flange

    Chevy 2.2L Header Flange

    $44.95
    Chevy 3.4 Liter V6 Stainless Header Flange

    Chevy 3.4 Liter V6 Header Flange

    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 Chevy 3.4 Liter V6 head.
    $61.95
    Chevy 3.4 Liter V6 Mild Steel Header Flange

    Chevy 3.4 Liter V6 Header Flange

    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.
    $39.95
    Chevy 348 - 409 Square Port header flange

    Chevy 348 - 409 Header Flange

    $78.95
    Chevy 348 - 409 Square Port header flange

    Chevy 348 - 409 Header Flange

    $44.95
    Chevy 4.2L Inline 6 DOHC Mild Steel Header Flange

    Chevy 4.2L Inline 6 DOHC Header Flange

    $67.95
    Chevy 4.2L Inline 6 DOHC Stainless Header Flange

    Chevy 4.2L Inline 6 DOHC Stainless Header Flange

    Precision laser cut from 3/8" thick 304 stainless, our header flanges are manufactured in the U.S. and are machine surfaced. This header flange fits a variation of GM 4.2L applications: Rainier, Trail Blazer, Colorado, Envoy, Hummer, Ascender and Saab 9-7X.
    $111.95
    Chevy 4.3L EcoTec3 LV3 Mild Steel Header Flange

    Chevy 4.3L EcoTec3 LV3 Mild Steel Header Flange

    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
    $39.95
    Chevy 4.3L EcoTec3 LV3 Stainless Header Flange

    Chevy 4.3L EcoTec3 LV3 Stainless Header Flange

    Precision laser cut from 3/8" thick 304 Stainless steel, our header flanges are manufactured in the U.S. and are machine surfaced.
    Port Size: 1 3/4" and 2" ports available
    $61.95
    Chevy 4.3L V6 Stainless Header Flange

    Chevy 4.3L V6 Header Flange

    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 Chevy 4.3L V6 head.
    $61.95
    Chevy 4.3L V6 Mild Steel Header Flange

    Chevy 4.3L V6 Header Flange

    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.
    $39.95
    Chevy 6.2L LT1 V8 Small Block Header Flange

    Chevy 6.2L LT1 V8 Small Block Stainless Header Flange

    $78.95
    Chevy Colorado 3.5L 3.7L I5 Header Flange

    Chevy Colorado 3.5L 3.7L I5 Header Flange

    $95.95
    Chevy Colorado 3.5L 3.7L I5 Header Flange

    Chevy Colorado 3.5L 3.7L I5 Header Flange

    $53.95
    Chevy LS header flange

    Chevy LS Header Flange - LS1, LS2, LS3, LS6

    This precision laser cut Chevy LS header flange is 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 Chevy LS head and has a round port.
    $78.95
    Chevy LS header flange

    Chevy LS Header Flange - LS1, LS2, LS3, LS6

    $44.95

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