Garrett 766399-5001S Turbocharger Assembly

The Garrett 766399-5001S is a GTB1752VK model variable nozzle turbine (VNT) turbocharger designed for the Mercedes-Benz OM629 4.0L V8 diesel engine. It features a pneumatically controlled wastegate actuator for precise boost regulation. This unit serves as the left-side (driver side) turbocharger for the twin-turbo configuration. OE cross-references include Mercedes-Benz part numbers A6290900380, A6290901180, and A6290901580. The turbocharger is engineered to meet original equipment specifications for durability and performance in Mercedes-Benz ML420 CDI (W164) and GL420 CDI (X164) applications produced approximately between 2006 and 2009. The core assembly (CHRA) utilizes Garrett's proprietary bearing system and aerodynamics for the OM629 engine's 225 kW (306 HP) output.