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Subaru EJ257 DOHC 16v Custom Header Build Kit

Subaru EJ257 Custom Header Build Kit

Product Code: SUBARU-EJ257-NA-HBK

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Material Type(required):

Collector Design(required):

Primary Tube Size(required):

Qty:

Pro Series Header Build Kits: Subaru EJ257 DOHC 16v

This header build kit has everything you need to bring that Subaru EJ257 custom header together. Designed to fit a variety of Subaru models from 2004-2017, including the renowned WRX and WRX STi our flanges are perfect for building that flat-4 custom header kit for any racing application. Our custom header build kit is great for building your car, truck, or off-road vehicle. See why Stainless Headers Mfg., Inc has the most complete header builder kit on the market. (HP recommendations at the bottom of this page)

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

Flanges – Included are 2 American made precision laser cut 3/8” thick header flanges
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 a set 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

Formed weld on collectors (Collector stars included)	Slip on merge collectors with a straight exit
Slip on merge collectors with a transitional exit	6 Part Video Series: How To Build Your Own Headers

Collector stars – A simple part that really helps speed up the fab process. Used as a weld in block off between the 4 tubes before welding the collector on, there are precision laser cut for a perfect fit between your specific primary tubes.
Purge Caps – This simple, but effective method for back purging caps works great. Each kit includes 3 primary caps and one collector cap.
O2 bungs – Each header builder kit includes 1 weld on O2 bung. Precision machined in the U.S. from 304 stainless billet, these bungs weld beautifully, not like a cast bung
Tig Filler Rod -Includes ¼ 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.

Because of the wide variety of engine chassis configurations these HP numbers are for general reference only.

1 5/8” Primary Tube Header Kit:150-200 Horse Power

1 3/4” Primary Tube Header Kit:200-300 Horse Power

Add A Transitional Merge Collector For That Extra Performance Edge

Reference Number: #80056