Intake Manifold for Subaru WRX STI EJ20 EJ25 2001–2007 | High Flow Inlet Manifold

Key Features

• Full Aluminum Construction
  Manufactured from high-quality aluminum to replace the heavy, restrictive factory cast intake manifold.
• High-Flow Plenum & Runner Design
  Enlarged airflow chamber improves air distribution and supports higher horsepower and boost levels.
• Precision TIG Welding
  Professionally TIG welded for strength, durability, and consistent internal airflow.
• Polished Finish
  Clean, polished exterior for improved engine bay appearance and corrosion resistance.
• Direct Replacement Design
  Designed to replace the OEM intake manifold on compatible Subaru EJ-series turbo engines.
• Performance-Oriented Upgrade
  Ideal for high-boost, built motor, or track-focused applications.

Vehicle Fitment

Fits the following vehicles:

• Subaru Impreza WRX / STI
• Model Years: 2001 – 2007
• Chassis: GDB / GD

Compatible Engines:

• EJ20T 2.0L Turbo
• EJ25T 2.5L Turbo

Fitment based on factory engine configuration. Please verify engine code before purchase.

What’s Included

• Full aluminum intake manifold (assembled)

Gaskets, sensors, throttle body, and fuel rails are not included unless otherwise stated.

Performance Benefits

• Increased intake airflow compared to OEM cast manifold
• Improved air distribution across cylinders
• Supports higher horsepower and boost pressure
• Reduced intake restriction for modified engines
• Enhanced engine bay aesthetics

Installation Notes

• Direct replacement for factory intake manifold
• Professional installation recommended
• May require transfer of OEM components (sensors, fittings, throttle body)
• ECU tuning recommended after installation for optimal performance