TD04L Turbocharger for Subaru WRX, Forester XT, Baja Turbo, Saab 9-2X – Part # 49377‑04553

New Replacement TD04L Turbocharger – Subaru EJ25 / Saab 9‑2X (OEM Ref# 49377‑04553)

This brand-new aftermarket turbocharger is a direct bolt-on replacement for the Mitsubishi TD04L model originally installed on 2002–2007 Subaru WRX (non-STI), 2004–2008 Forester XT, 2004–2006 Baja Turbo, and 2005–2006 Saab 9‑2X Aero. Built to factory specifications, this unit includes a pre-calibrated wastegate actuator and all-new bearings, seals, and housings — designed for reliable stock-level performance and seamless installation.

Key Features:

• 100% brand-new unit — no core required
• Direct-fit bolt-on replacement for OEM Mitsubishi TD04L
• Turbo model: TD04L‑04HL 13T‑6.0 (wastegated, single-scroll)
• Balanced boost delivery with factory spool characteristics
• Includes actuator (Part# 49477‑18943) and water-cooled CHRA (Part# 49377‑08121)
• Comes with turbine housing (49377‑17050/17040) & compressor cover (49377‑58570/58525)
• Covered by a 12-month limited warranty

Vehicle Compatibility:

• 2002–2007 Subaru Impreza WRX (non-STI)
• 2004–2008 Subaru Forester XT
• 2004–2006 Subaru Baja Turbo
• 2005–2006 Saab 9‑2X Aero
• Engines: Subaru EJ25 (may fit EJ20 WRX variants)

Replaces the following OEM part numbers:

• Mitsubishi: 49377‑04553, 49377‑04502, ‑04505, ‑04550, ‑04552, ‑04555
• Subaru: 14411‑AA530, 14411‑AA531, 14411‑AA532, 14411‑AA630

Technical Specifications:

• Water-cooled center housing for improved thermal stability
• Actuator spring pressures:
  • P1 (low-pressure): ~6.6 psi (45.3 kPa)
  • P2 (high-pressure): ~8.1 psi (56 kPa)

Installation Notes:

• Replace oil supply and return lines during installation
• Follow Subaru TSB 02‑103‑07 for banjo bolt and line cleaning to prevent oil starvation
• No tuning required — designed for stock boost and air volume

Why Choose This Turbo?

• OEM-spec quality and dimensions for worry-free installation
• Matches stock boost behavior with OE-level durability
• Backed by a 12-month limited warranty
• Perfect alternative to used or reman units — no core needed

*Not intended as a performance upgrade. For best results, always install with clean oil lines and new gaskets.*

Questions? Contact us during business hours (Mon–Fri, Pacific Time). Closed weekends and holidays.

About This TD04L Turbocharger — Subaru WRX, Forester XT, Baja Turbo, Saab 9-2X

Part number 49377-04553 identifies the Mitsubishi TD04L turbocharger used across several Subaru EJ-platform applications in the mid-2000s, including the Subaru WRX, Forester XT, Baja Turbo, and the Saab 9-2X Aero (which was essentially a Subaru WRX in Saab trim). The TD04L is a reliable mid-frame Mitsubishi turbocharger that provides a good balance of spool speed and top-end flow for stock and mildly modified applications on the EJ20 and EJ25 engines.

Failure on the TD04L platform presents as oil in the intercooler, shaft play audible as a rattling or chirping under boost, loss of boost pressure, or compressor wheel damage from debris ingestion through a failed air filter or cracked intake hose.

TD04L Failure Causes on Subaru Applications

• Oil change neglect — dirty oil accelerates journal bearing wear significantly
• Oil starvation from low level or surge during aggressive cornering
• Cracked or disconnected air intake hoses — dirt ingestion destroys the compressor wheel
• Head gasket failure — the EJ platform has a known head gasket vulnerability; coolant contamination in the oil system destroys bearings

Cross-Application Fitment Note

The 49377-04553 TD04L was used across WRX, Forester XT, Baja, and Saab 9-2X applications — but subtle differences in wastegate actuator spring rate and outlet flange configuration exist across model years. Verify your existing part number before ordering. PT Turbo in San Bernardino, CA stocks TD04L units for all EJ-platform Subaru applications and can confirm the correct part for your specific vehicle. Contact us before ordering if you have a modified application or are unsure of your exact variant.

Before replacing, confirm the diagnosis with our guide to warning signs your turbocharger is failing.