Patriot Exhaust Header Flange Kits Product images may differ from actual product appearance. Patriot precision machined header flange kits are available for many popular engine families. Header flange kits come complete with premium gaskets and header bolts. Choose from our 3/8'' or our weight saving 5/16'' flanges.

737-H7830

Header Flange Kit Cadillac 425, 500 3/8'' Flange Thickness 1-7/8'' Tube Size Square Port View this item

$142.99 Ships 02/23/12

737-H7800

Header Flange Kit Chevy 265-400 Inner Flange 5/16'' Flange Thickness SAP View this item

$162.99 Ships 02/23/12

737-H7831

Header Flange Kit Chevy 265-400 3/8'' Flange Thickness 1-5/8'' Tube Size Round Port View this item

$113.99 Ships 02/23/12

737-H7832

Header Flange Kit Chevy 265-400 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$107.99 Ships 02/23/12

737-H7833

Header Flange Kit Chevy 265-400 Outer Flange 3/8'' Flange Thickness 1-7/8'' - 2'' Tube Size Round Port View this item

$142.99 Ships 02/23/12

737-H7834

Header Flange Kit Chevy 348, 409 3/8'' Flange Thickness 2'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7861

Header Flange Kit Chevy 265-400 Stainless Steel 5/16'' Flange Thickness 1-5/8'' Tube Size Oval Port View this item

$186.99 Ships 02/23/12

737-H7863

Header Flange Kit Chevy 265-400 3/8'' Flange Thickness 1-5/8'' Tube Size Oval Port View this item

$45.99 Ships

737-H7864

Header Flange Kit Chevy 265-400 5/16'' Flange Thickness 1-5/8'' Tube Size Round Port View this item

$36.99 Ships

737-H7892

Header Flange Kit Chevy LS1/LS6 5/16'' Flange Thickness 1-5/8'' - 1-7/8'' Tube Size Round Port View this item

$42.99 Ships 02/23/12

737-H7893

Header Flange Kit Chevy LS1/LS6 3/8'' Flange Thickness 1-5/8'' - 1-7/8'' Tube Size Round Port View this item

$42.99 Ships

737-H7894

Header Flange Kit Chevy 265-400 5/16'' Flange Thickness 1-3/4'' Tube Size Oval Port View this item

$45.99 Ships

737-H7895

Header Flange Kit Chevy 265-400 Brodix 5/16'' Flange Thickness 1-7/8'' - 2'' Tube Size Round Port View this item

$86.99 Ships 02/23/12

737-H7896

Header Flange Kit Chevy 265-400 Brodix 5/16'' Flange Thickness 1-3/4'' - 2'' Tube Size Round Port View this item

$86.99 Ships 02/23/12

737-H7899

Header Flange Kit Chevy 396-502 3/8'' Flange Thickness 1-3/4'' - 2'' Tube Size SAP View this item

$37.99 Ships 02/23/12

737-H7835

Header Flange Kit Chrysler/Dodge 273-360 3/8'' Flange Thickness 1-5/8'' Tube Size SAP View this item

$105.99 Ships 02/23/12

737-H7837

Header Flange Kit Chrysler/Dodge 354, 392 Hemi 3/8'' Flange Thickness 2'' Tube Size Round Port View this item

$142.99 Ships 02/23/12

737-H7838

Header Flange Kit Chrysler/Dodge 383-440 (Excluding Hemi) 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7840

Header Flange Kit Chrysler/Dodge 426 Hemi 3/8'' Flange Thickness 2'' Tube Size Square Port View this item

$142.99 Ships 02/23/12

737-H7880

Header Flange Kit Chrysler/Dodge 273-360 5/16'' Flange Thickness 1-5/8'' - 1-3/4'' Tube Size Rectangular Port View this item

$36.99 Ships 02/23/12

737-H7890

Header Flange Kit Chrysler/Dodge 383-440 (Excluding Hemi) 5/16'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$36.99 Ships 02/23/12

737-H7897

Header Flange Kit Chrysler/Dodge 383-440 (Excluding Hemi) 5/16'' Flange Thickness 1-7/8'' - 2'' Tube Size Rectangular Port View this item

$39.99 Ships 02/23/12

737-H7841

Header Flange Kit Ford 260-351W 3/8'' Flange Thickness 1-5/8'' Tube Size Rectangular Port View this item

$125.99 Ships 02/23/12

737-H7842

Header Flange Kit Ford 260-351W 5/16'' Flange Thickness 1-1/2'' Tube Size Oval Port View this item

$35.99 Ships 02/23/12

737-H7843

Header Flange Kit Ford 260-351W 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7844

Header Flange Kit Ford 351-400M 3/8'' Flange Thickness 1-3/4'' Tube Size Oval Port View this item

$142.99 Ships 02/23/12

737-H7845

Header Flange Kit Ford 351C (4-bbl Heads) 3/8'' Flange Thickness 2'' Tube Size Square Port View this item

$142.99 Ships 02/23/12

737-H7846

Header Flange Kit Ford 351W World Product Head 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7847

Header Flange Kit Ford 390-428 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7848

Header Flange Kit Ford 390-428 3/8'' Flange Thickness 2'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7849

Header Flange Kit Ford 429-460 3/8'' Flange Thickness 1-3/4'' Tube Size Oval Port View this item

$142.99 Ships 02/23/12

737-H7850

Header Flange Kit Ford 429-460 3/8'' Flange Thickness 2'' Tube Size Oval Port View this item

$107.99 Ships 02/23/12

737-H7851

Header Flange Kit Ford 460 (Fuel Injection) 3/8'' Flange Thickness 1-3/4'' Tube Size Oval Port View this item

$142.99 Ships 02/23/12

737-H7869

Header Flange Kit Ford 272-312 Y 5/16'' Flange Thickness 1-1/2'' Tube Size Square Port View this item

$72.99 Ships 02/23/12

737-H7870

Header Flange Kit Ford 260-351W 5/16'' Flange Thickness 1-5/8'' - 1-3/4'' Tube Size Oval Port View this item

$36.99 Ships 02/23/12

737-H7871

Header Flange Kit Ford 429-460 5/16'' Flange Thickness 2'' Tube Size Oval Port View this item

$36.99 Ships 02/23/12

737-H7881

Header Flange Kit Ford Boss 351C 5/16'' Flange Thickness 2'' Tube Size Rectangular Port View this item

$37.99 Ships 02/23/12

737-H7852

Header Flange Kit Oldsmobile 403-455 3/8'' Flange Thickness 1-3/4'' Tube Size Rectangular Port View this item

$142.99 Ships 02/23/12

737-H7853

Header Flange Kit Pontiac 326-455 3/8'' Flange Thickness 1-7/8'' Tube Size Round Port View this item

$115.99 Ships 02/23/12

737-H7854

Header Flange Kit Pontiac 326-455 3/8'' Flange Thickness 1-3/4'' Tube Size D-Port View this item

$115.99 Ships 02/23/12