Ford 300/4.9L Straight 6 Custom Header Build Kit

This header build kit has everything you need to bring that Ford 300/4.9L 6-Cylinder custom header together. Designed to fit the straight 6 Ford engines found in a large variety of Ford trucks and other vehicles. This kit is suitable for carbureted or EFI-type cylinder heads. Great for building that set of headers for your Ford 300 powered truck or car.

What makes our header build kits the choice of top fabricators?

Included are:

• Flanges: 1 American made precision laser cut 3/8" thick header flange to fit the Ford 300/4.9L cylinder head.
• Port Size: 2.00"
• Flange Stubs: Included are (6) preformed flange stubs to help speed up the fabrication process. These stubs are formed to the exact flange port shape, and come in 1 3/4", 1 7/8" or 2" primary tube size.
• Mandrel Bends: We supply (10) 180 degree J bends. Our J bends come with a 6" & a 12" leg. For most header builds, this extra leg length mean you won't need to buy any straight tubing.
• 3 into 1 Collectors or 6-1 Collector: From there we supply one of our weld-on formed collectors, or offer an upgrade to a super high flow 4 into 1 slip on merge collectors with 2 sets of collector tabs. Just like our stainless bends, we start off with an American made 304 stainless and fabricate the industries finest collectors . We offer these header kits with 5 different collector options:
• Weld-On 3-1 Formed Collector (1 3/4" primary & 2 1/2" Secondary Size only)
• 3-1 Slip on merge collectors with a straight exit (Collector tabs included)
• 3-1 Slip on merge collectors with a transitional exit (Collector tabs included)
• 6-1 Slip on merge collector with a straight exit (Collector tabs included)
• 6-1 Slip on merge collector with a transitional exit (Collector tabs included)
• Purge Caps: This simple, but effective method for back purging caps works great. Each kit includes 6 primary caps and one collector cap.
• O2 bungs: Each header builder kit includes 2 weld on O2 bungs. Precision machined in the U.S. from 304 stainless billet, these bungs weld beautifully, not like a cast bung
• Tig Filler Rod: Includes 1/4 lbs. package of filler rod Be sure to check out our Facebook, Instagram, and YouTube channels for continuous updates on customer projects, as well as how-to videos and information about our extensive product lineup.