Pro Series Header Build Kits: Subaru EJ257

This header build kit has everything you need to bring that Subaru custom header together. These precision laser-cut flanges are designed to fit the EJ257 Subaru boxer engines found in 2004-2017 Subaru vehicles, notably the WRX and WRX STi. Great for building that set of headers for your Subaru powered truck, car, or boat. See why Stainless Headers Mfg., Inc has the most complete header builder kit on the market.

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

Included are:

• Flanges: 2 American made precision laser cut 3/8� thick header flanges to fit the Subaru EJ257 WRX engines.
• Port Size: 1.630" Round Port
  
• Mandrel Bends: We supply (6) 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. What makes our stainless mandrel bends truly a unique product? We start off with an American made 304 stainless raw material, that is then bent in the U.S. for a genuine 304 .065 stainless bend. Our material forms better, welds better and last because it is a genuine 304 stainless.
• 4 into 1 Collectors: From there we supply a precision formed 4 into 1 collector or one of our optional super high flow 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 3 different collector options:
• Weld-on Formed Collector (Collector Star Included)
  
• Slip on merge collector with a straight exit (Collector tabs included)
• 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 4 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 � lbs. package of filler rod
  

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