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Air and Fuel› Intake Manifolds and Components

Cosworth

Performance Intake Manifold for Subaru EJ20/EJ25

$1,542.40 $1,399.00 Save $143.40

SKU: 20006438

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cosworth High Volume Inlet Manifold is engineered as a direct replacement for stock intake plenums on Subaru Impreza GT, WRX, and STI models, as well as Forester XT variants equipped with EJ20 and EJ25 engines. This performance upgrade is designed to increase airflow and enhance engine performance, with claims of up to a 7% increase when used with the same engine setup. This manifold boasts a larger air reservoir and a less restrictive airflow path, making it suitable for cars at various stages of tune. The unit is compatible with models fitted with electronic throttle control, such as the EJ257 STI engines, but is not designed for use with cable-actuated throttles. Additional specifications include a maximum pressure rating of 120 psi and a maximum temperature of 392°F (200°C). It is equipped with four 1/8" BSPT vacuum ports and two 1/4" BSPT vacuum ports. The manifold is generally recommended for Subaru Impreza models from 1994-2013 and Forester XT models from 1997-2014, specifically for EJ20 and EJ25 engines.

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

BrandCosworth
Part Number20006438
CategoryAir and Fuel

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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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