Holset 3785383 HX50W Turbocharger Assembly

This turbocharger assembly corresponds to the Holset HX50W frame size, engineered specifically for Weichai WP10 and WP12 series diesel engines ranging from 9.7 to 11.6 liters displacement. The unit integrates a wastegate actuator for boost pressure regulation, a T4 divided turbine inlet flange, and a compressor cover configured for high-efficiency airflow at rated engine speeds of 1900-2200 RPM. Core rotating assembly utilizes a full-floating bronze bearing system with piston ring seals, requiring clean 15W-40 engine oil supply at 300-450 kPa pressure and coolant circulation for bearing housing thermal management. The component serves as direct replacement for Weichai OEM part numbers 612601111007 and 612601111007M1, cross-referencing to Holset manufacturer part number 3785383. Application coverage extends across Shacman, Sinotruk, and FAW heavy-duty truck platforms, plus XCMG, Shantui, and LiuGong construction equipment powered by Weichai engines. Installation requires verification of actuator preload setting, oil feed line cleanliness, and exhaust manifold gasket replacement to prevent leakage and ensure rotor dynamic balance integrity.