Rotomaster M8040104R Turbocharger

Remanufactured Turbocharger for Subaru Performance

Restore boost response and engine efficiency with the Rotomaster remanufactured turbocharger, part number M8040104R. This direct-replacement unit is built for OE fit and tested to meet OE performance standards for Subaru Impreza and Subaru WRX applications.

The Rotomaster remanufactured turbocharger line focuses on renewed internal components, controlled tolerances, and installation-ready packaging for a cleaner replacement process. For drivers searching for a remanufactured turbocharger for 2009-2014 Subaru Impreza or 2013-2014 Subaru WRX, M8040104R provides a practical OE-style solution.

Key Features

• Remanufactured turbocharger with journal bearing design
• Meets or exceeds OE performance requirements
• 100% of rotating, journal, and thrust bearings and seals are replaced
• Mating surfaces and passages are renewed as required during remanufacturing
• Wheels, shafts, and bores are measured to controlled go/no-go tolerances
• Includes gasket and mounting hardware for installation
• Includes pre-lube syringe and instruction sheet
• Coolant-cooled turbocharger with wastegate actuator included

Detailed Description

Rotomaster remanufactured turbochargers are engineered for direct replacement in a wide range of automotive applications, including Subaru turbo models. Part number M8040104R is designed and tested to match OE fit and performance, helping return the engine to proper boost delivery and fuel-efficient operation. This turbocharger uses steel and aluminum construction, a journal bearing setup, and coolant cooling for dependable service in the intended application.

Compatible With 2009-2014 Subaru Impreza and 2013-2014 Subaru WRX, this turbocharger is a fitment-specific replacement for vehicles that need restored boost control and consistent engine response. This part cross-references Subaru 14411AA800 for the same application.

What It Can Help Solve

• Loss of engine power or slow turbo response
• Foreign object damage to compressor or turbine wheels
• Oil leakage from worn seals or excessive crankcase pressure
• Thrust bearing wear from exhaust backpressure
• Turbocharger failure caused by contaminated or oil-starved lubrication

Installation Notes and Tips

Before replacing a failed turbocharger, diagnose and correct the original cause of failure to protect the new unit. Replace the engine oil, oil filter, and intake air filter as required by the installation guide, especially on the 2012 Subaru WRX application. Allow the engine to cool before shutdown to reduce the risk of oil coking, and keep the air and exhaust system clean to help prevent blade damage from contaminants.

For Subaru Impreza and Subaru WRX turbocharger replacement, follow the included instructions and use the supplied pre-lube syringe during installation.

Quality Assurance

Each Rotomaster remanufactured turbocharger is designed and tested for OE fit and performance. Internal bearings and seals are renewed, critical dimensions are controlled during remanufacturing, and the unit is prepared for direct replacement in the listed Subaru applications. Rotomaster also states that its aftermarket turbochargers comply with federal emissions regulations.