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AGT 55mm Turbocharger | 04-07 Subaru WRX EJ20 & 04+ STi EJ25 - 1
AGT 55mm Turbocharger | 04-07 Subaru WRX EJ20 & 04+ STi EJ25 - 2

AGT 55mm Turbocharger | 04-07 Subaru WRX EJ20 & 04+ STi EJ25

sku-49863601455389

Wastegate
Wastegate: EWG ( Flapper welded shut for EWG)
Bearing Type
Bearing Type: Journal Bearing
$ 1,500.00

AGT 55mm Turbocharger | 04-07 Subaru WRX EJ20 / 04+ Subaru STi EJ25

Upgrade your Subaru with the AGT 55mm Turbocharger, engineered for 2004–2007 WRX (EJ20) and 2004+ STI (EJ25) applications. Designed as a direct bolt-on turbo upgrade, this unit supports up to 60 lbs/min of airflow, making it an excellent choice for high-performance street builds and track-ready setups.

This turbocharger delivers strong mid-range torque with impressive top-end power, while maintaining OEM-style fitment for simplified installation.

Performance Specifications

  • Flow Rate: 60 lbs/min
  • Compressor Wheel: 55x76mm
  • Turbine Wheel: 54x61mm
  • Bearing Type: Journal bearing with a heavy-duty thrust bearing
  • Turbine Housing: 8cm single scroll
  • Inlet Size: OEM-style
  • Wastegate Options: 
    • Internal 15 PSI wastegate
    • Flapper welded shut for external wastegate (EWG) setup
  • Oil Feed: Designed for use with OEM oil feed line
  • Fitment: Bolt-on to factory manifold, uppipe, and downpipe flange

Direct Bolt-On Turbo Upgrade for EJ20 & EJ25

The AGT 55mm turbo retains OEM-style inlet sizing and flange configuration, allowing it to bolt directly to your existing factory exhaust manifold, uppipe, and downpipe. No custom fabrication required.

The 8cm single scroll turbine housing balances spool response with airflow efficiency, making it ideal for tuned WRX and STI builds targeting increased horsepower and torque without sacrificing drivability.

Built for Performance & Reliability

Featuring a journal bearing system with a heavy-duty thrust bearing, this turbo is engineered to handle elevated boost pressures and aggressive driving conditions. Whether you're building a responsive, daily-driven WRX or a higher-horsepower STI setup, the AGT 55mm provides the airflow and durability needed to support your goals.

If you’re searching for a bolt-on 55mm turbo upgrade for 2004–2007 WRX EJ20 or 2004+ STI EJ25, this unit offers proven flow capacity, OEM-style fitment, and strong performance potential.

  • Turbocharger with chosen wastegate option
  • Oil feed banjo bolt
  • Coolant lines with hardware and copper washers
  • oil drain line with hardware and gasket
  • exhaust gaskets
  • turbine housing studs/nuts

All AGT Turbochargers are Built to order and subject to a standard 6 week build time. Build times may vary.

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