Rotomaster A8370107R Turbocharger

Remanufactured Turbocharger for Silverado and Sierra

Restore boost response and engine efficiency with this Rotomaster remanufactured turbocharger, part number A8370107R. It is a direct-replacement turbocharger for select Chevrolet Silverado 2500 HD and Silverado 3500, plus GMC Sierra 2500 HD and Sierra 3500 applications from 2002-2004.

Rotomaster remanufactured turbochargers are built for OE fit and performance, with journal bearing construction, coolant cooling, and a supplied wastegate actuator. This unit is designed for drivers replacing a worn or failed turbo on a diesel truck that needs dependable airflow, proper boost control, and restored drivability.

Key Features

• Remanufactured direct-replacement turbocharger for OE-style fitment
• Journal bearing design for controlled shaft support
• Coolant-cooled turbocharger construction
• Wastegate actuator included
• 100% of rotating, journal, and thrust bearings and seals replaced
• All mating surfaces and passages renewed as required
• Wheels, shafts, and bores measured to go/no-go tolerances
• Includes gasket, syringe, instruction sheet, and washers
• Meets or exceeds OE performance targets

Product Details

Rotomaster’s remanufactured turbocharger line focuses on OE replacement coverage for a wide range of vehicle applications. For this A8370107R unit, the remanufacturing process replaces critical wear components, checks rotating assemblies against controlled tolerances, and renews sealing and flow surfaces to support stable operation. The result is a turbocharger intended to restore factory-style boost delivery and fuel-efficiency performance on compatible Chevrolet and GMC heavy-duty trucks.

This part cross-references Chevrolet 97307711 and 97720748 for the same application.

What It Helps Fix

• Loss of engine power or slow turbo spool
• Smoke in the exhaust caused by turbo seal wear or oil contamination
• Oil leakage from the turbocharger area related to worn internal seals
• Boost control issues from a worn wastegate or damaged rotating assembly
• Noise or vibration from bearing wear or shaft damage

Installation Notes and Tips

• Fits 2002-2004 Chevrolet Silverado 2500 HD, N/A.
• Fits 2002-2004 Chevrolet Silverado 3500, N/A.
• Fits 2002-2004 GMC Sierra 2500 HD, N/A.
• Fits 2002-2004 GMC Sierra 3500, N/A.
• Replace engine oil and filter before installation and follow the included instruction sheet.
• Diagnose and correct the original cause of turbo failure before installing the replacement unit.
• Inspect the air intake and exhaust system for contamination or foreign-object damage.
• Use the supplied pre-lube syringe during installation to protect internal components.

Quality Assurance

Each Rotomaster remanufactured turbocharger is designed and tested to match OE fit and performance expectations. The remanufacturing process replaces bearings and seals, renews required passages and surfaces, and verifies wheel and shaft tolerances to support reliable operation. Rotomaster also notes that proper oil service and correct failure diagnosis are important to protect the replacement turbocharger and maintain emissions-system compliance.