Kinugawa Turbo TD05H-16G for Subaru Impreza WRX STi Forester XT 98-08

TD05H-16G Turbo Upgrade for Subaru WRX, STi & Forester XT

Is your factory turbocharger feeling tired, or are you ready to make more power without going over the top? The Kinugawa TD05H-16G is a proven upgrade for Subaru WRX, WRX STi, and Forester XT owners targeting improved mid-range response and top-end power. A direct bolt-on replacement for the TD04L turbo — no modifications required to manifold or downpipe.

Vehicle Compatibility

Subaru Impreza WRX / WRX STi:

• 1998–1999 Subaru Impreza WRX / WRX STi GC8 (EJ20/EJ25)
• 2002–2007 Subaru Impreza WRX / WRX STi GDA/GDB (EJ20/EJ25)
• 1998–1999 Subaru Impreza WRX GDA/GGA (EJ205/EJ255)
• 2002–2007 Subaru Impreza WRX GDA/GGA (EJ205/EJ255)

Subaru Forester XT:

• 1999–2008 Subaru Forester XT 58T SG9 (EJ205/EJ255)

Subaru Baja:

• 2004–2006 Subaru Baja XT BT (EJ255)

Saab 9-2X Aero:

• 2005–2006 Saab 9-2X Aero GGA (EJ205/EJ255)

Compatible OEM Part Numbers

Mitsubishi TD04L: 49377-04100, 49377-04200, 49377-04300, 49377-04502, 49377-04504, 49377-04505
Subaru OEM: 14412-AA360, 14412-AA140, 14412-AA451, 14412-AA532, 14412-AA560

Engineering Specifications

CHRA Size: TD05H-16G
Compressor Wheel: 48.3 / 68.0mm
• Cast 6+6 — OEM-style response
• Billet 6+6 — improved low-end torque and heat resistance
• Billet 11+0 — engineered for top-end airflow and speed
Compressor Housing: 2.25" inlet / 2.0" outlet, stock type
Turbine Wheel: 56.0 / 49.2mm — explore STS technology↗
• 12 Blades STD — stock-style response
• 9 Blades STS — Superior Turbine Strike for improved spool and durability
• 10 Blades STS 55 — maximum flow for high-output builds
Turbine Housing: Hi-Ni alloy for thermal resistance, Subaru single-scroll inlet/outlet, internal wastegate
• 7cm / AR.49 — faster spool, street and daily builds
• 8cm / AR.57 — higher peak flow, track and performance builds
Bearing Type: Journal bearing with 360-degree thrust bearing kit
Cooling Type: Oil and water cooling
Wastegate Actuator: 1.0 bar (14.7 PSI) default
• Available spring rates: 0.3, 0.5, 0.8, 1.2, 1.5, 1.7, 2.0 bar (specify at checkout or contact us)

7cm vs 8cm Turbine Housing — Which Should You Choose?

• 7cm / AR.49 — Faster spool, stronger low-to-mid range torque. Ideal for street driving, daily use, and builds under 300 WHP.
• 8cm / AR.57 — Higher peak airflow, better top-end power. Ideal for track builds and modified engines targeting 300+ WHP.

Complete System Includes

• 1 × TD05H-16G turbocharger assembly
• 1 × Oil supply set
• 1 × Water supply and return pipe set
• 1 × Return oil pipeline
• 1 × Turbine inlet and outlet gasket
• 5 × Stud and nut set
• 1 × Balance report with anti-counterfeit verification tag↗

Performance Notes

Maximum power stated for each turbocharger has been calculated based strictly on the choke flow of the compressor map (total turbo capability), representing the potential flywheel power. Actual performance results depend highly on your vehicle's modifications and tuning/calibration.

Quality Assurance & Coverage

Condition: Factory-new assembly
Balancing: Complete CHRA balanced using SCHENCK MBRS 110 precision equipment (Germany)
Manufacturing Origin: Taiwan | HS Code: 841199
Warranty Protection: 1-year Kinugawa Trouble-Free Warranty covering free overhaul, reconditioning, or replacement from original purchase date. Complete peace of mind regardless of failure cause.