MAP Subaru 4-1 Equal Length Header | 2004-2021 Subaru STI (SUB-ELH-REV2)
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EJ Series 4-1 Subaru Equal Length Header
New equal length turbo manifold for your EJ20/EJ25 series Subaru! Made from top quality 304 stainless, this header will be the last one you will ever need to buy. Efficient and proven on power
Ceramic Coating: Our advanced ceramic coating option helps control heat soak. The piece is coated in a thermal barrier (available in black only) that looks great and protect wires and hoses from heat. Please note the coating may need some extra curing to prevent flaking after installation. Please allow the part to heat up during normal driving or idling and then completely cool before putting it through it's paces.
Features
- 100% made In the USA!
- Equal Length Subaru headers with a 4-1 design is more efficient
- Made from 304 RathGibson stainless steel
- Utilizes a merge collector center cone to improve flow
- 1/2 up-pipe flange to reduce warping
- 1.625 ID - 1.75 OD
- Flat-sanded flanges to ensure a leak free design
- Four 1.750 runners merge to a 2.25 up tube
- Comes with a bolt in header support bracket to help support up-pipes that don't have upper mounting brackets
Applications
- Impreza WRX EJ20 2002-2005
- Impreza WRX 2006–2014
- Forester XT 2004–2013
- Legacy GT 2005–2012
- Impreza WRX STi 2004-2007
- Impreza WRX STI 2008-2018
- WRX STI 2019+ EJ engine
What's in the box?
- (1) Stainless Header
- (1) Header support bracket
Installation Instructions
1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship. The purchaser will be responsible for sending the product back, after contacting MAPerformance and reporting the failure. Further instructions will be provided by MAPerformance.
2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review. Products that are factory coated must adhere to the break in process. Only products coated by MAPerformance will be covered. Products will not be covered if wrapped.
3.) MAPerformance “Limited Lifetime” Warranty does not apply to all products. Kits, packages, bundles, or any non fabricated parts and products by MAPerformance are not warrantied. Engines and engine assemblies are not warrantied. Cast components are warrantied for 3 years from purchase date.
Excellent fitment and super easy to install.
First and foremost the product itself is quality. Piping and welds are great. I purchased the coated header and everything looks mint. As for install... Anyone installing this on a ej20 or 04/05 sti, you will need 06+ oil pan/dipstick, preferably wrap the coolant line to the oilcooler from the water pump with heat shield because its a super tight fit, i ended up routing it up further to keep as much clearance as possible. If you are using an aftermarket radiator, in my case (cobb) you will likely need to trim the passenger side lower fan shroud. Car runs great with the header installed, just wanted to give anyone with a pre 06 model a heads up because the instructions are slim, and there isnt much info online.
Absolutely the best welds I have seen super easy install sounds great and you can’t beat the bump in power you get
The header wouldn't fit the stock oil pan on my 04 STI. Needed to get an aftermarket pan to make it work. Unexpected and not really welcome, but it does work once you adapt the car.