Turbo Turbocharger For Subaru Impreza WRX STI DOCH RHF55 VF39 2.5L 2004-2007

Turbo Turbocharger for Subaru

This turbocharger, an RHF55 VF39 replacement, mounts to the exhaust manifold and uses exhaust flow to compress intake air for stronger engine output on the listed Subaru models.

Overview

This turbocharger is a replacement unit built to match the RHF55 VF39 specification for 2.5L Subaru turbocharged engines. It forces additional air into the intake so the engine can produce more power across the rev range. This turbocharger suits drivers replacing a failed factory unit on compatible Impreza WRX STI applications.

Built For Performance

• RHF55 VF39 turbo specification
• Built for 2.5L turbocharged Subaru engines
• Designed for bolt-on fitment at the exhaust manifold
• Housing and internal components assembled as a complete replacement unit
• Balanced rotating assembly for smooth spool

Fits These Machines

• for Subaru Impreza WRX STI 2.5L 2004-2007

On-The-Job Use

• Replacing a worn or failed factory turbocharger
• Restoring boost on turbocharged Impreza WRX STI models
• Engine repair and rebuild projects
• Performance refresh on a tired forced-induction setup

Specs At A Glance

Good To Know

Q: What should I check before installing a replacement turbocharger? A: Inspect the oil feed and return lines for sludge or blockage and replace them if needed. Clean oil supply helps protect the new turbocharger from early failure.

Q: Does this turbocharger need a tune after installation? A: Any turbo replacement can affect boost behavior, so a professional software check and dyno tune are recommended. Proper tuning helps protect the engine and confirm expected performance.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.