Rotomaster K8030129R Turbocharger

Remanufactured Turbocharger for Audi and Volkswagen

Rotomaster K8030129R is a remanufactured turbocharger built for direct replacement on select Audi A4, Audi A4 Quattro, and Volkswagen Passat applications. It is engineered to restore OE fit and performance while supporting efficient boost response and fuel economy.

This Rotomaster remanufactured turbocharger line focuses on renewed internal wear components, measured rotating assemblies, and installation-ready packaging for a cleaner repair process. The K8030129R is a journal-bearing, coolant-cooled unit with a wastegate actuator included.

Key Features

• Remanufactured direct-replacement turbocharger for OE-style fitment
• Journal bearing design with coolant cooling method
• Wastegate actuator included
• 100% of rotating, journal, and thrust bearings and seals replaced
• Mating surfaces and passages renewed as required for longer service life
• Wheels, shafts, and bores measured to controlled go/no-go tolerances
• Meets or exceeds OE performance targets
• Includes turbocharger, gasket, syringe, and instruction sheet

Product Details

Rotomaster remanufactured turbochargers are built for drivers who need a replacement turbo that matches original equipment fit and function. Part number K8030129R is designed for 2000-2006 Audi A4, 2000-2005 Audi A4 Quattro, and 2000-2005 Volkswagen Passat applications. This part cross-references Audi and Volkswagen OE numbers, including 058145703N and 058145703NX, for the same application. The remanufacturing process replaces critical wear items, renews sealing surfaces, and verifies shaft and wheel clearances to help maintain stable boost control and consistent operation.

What It Helps Fix

• Loss of engine power from a worn or damaged turbocharger
• Oil leakage from worn internal seals
• Smoke in the exhaust caused by turbo wear or engine blow-by
• Boost issues related to worn bearings or shaft play
• Foreign-object damage to compressor or turbine wheels

Installation Notes and Tips

• Fits 2000-2006 Audi A4, N/A.
• Fits 2000-2005 Audi A4 Quattro, N/A.
• Fits 2000-2005 Volkswagen Passat, N/A.
• Change the engine oil and filter before installation.
• Follow the included installation guide for proper setup and warranty compliance.
• Inspect and clean the air intake and exhaust system before installing the replacement turbocharger.
• Replace the air filter if contamination is present.
• Allow the engine to cool before shutdown to reduce oil coking risk.
• Diagnose and correct the original failure cause before installing the new unit.

Quality Assurance

Rotomaster designs and tests these remanufactured turbochargers to match OE fit and performance and to comply with federal emissions regulations. The K8030129R is built with renewed bearings, seals, and controlled clearances to support reliable operation in Audi A4, Audi A4 Quattro, and Volkswagen Passat turbocharger applications.