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Exhaust› Headers, Manifolds and Components

MAPerformance

4-1 Equal Length Header for EJ20/EJ25

Name: 4-1 Equal Length Header for EJ20/EJ25
Brand: MAPerformance
SKU: MAP WRX-4G-ELH

$888.99 $775.99 Save $113.00

SKU: MAP WRX-4G-ELH

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Overview

The MAPerformance 4-1 Equal Length Header is a turbo manifold designed for EJ20/EJ25 series Subarus. This header features a 4-1 design, utilizing a merge collector center cone to improve flow and a 1/2" up-pipe flange to reduce warping.

Made in the USA, the header has four 1.750" runners that merge to a 2.25" up tube. It includes a bolt-in header support bracket. An optional ceramic coating is available to help control heat soak.

Show original supplier description

The MAPerformance 4-1 Equal Length Header is a new turbo manifold engineered for EJ20/EJ25 series Subaru engines, offering an efficient and proven power upgrade. Constructed from premium 304 RathGibson stainless steel, this header is built to last and comes with a limited lifetime warranty. Key features include a 4-1 equal length design that is more efficient, a merge collector with a center cone for improved flow, and a 1/2" up-pipe flange designed to minimize warping. The header utilizes four 1.750" runners that converge into a 2.25" up tube and includes a bolt-in header support bracket. The flanges are flat-sanded to ensure a leak-free seal. The product is 100% made in the USA. Note that this coating may require a curing process involving heating and cooling cycles before full performance driving. This header is designed to fit various Subaru models including the 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), and WRX STI 2019+ (EJ engine). However, installation on pre-2006 STI models (EJ20 or 04/05 STI) may require additional modifications such as an 06+ oil pan/dipstick, and potential heat shielding for coolant lines. Users may also need to trim the passenger side lower fan shroud if using an aftermarket radiator. The package includes the stainless header and a header support bracket.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	MAPerformance
Part Number	MAP WRX-4G-ELH
Category	Exhaust

Videos

MAPerformance Equal Length Header | 2003-17 Subaru WRX / STI Sound Clips

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2015-2019 WRX Stage 2 Package | MAPerformance Sound Clips and Review

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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