Weichai 1002109666 Turbocharger Oil Return Pipe Assembly

The 1002109666 turbocharger oil return pipe assembly is engineered to OEM specifications for Weichai heavy-duty diesel engine platforms. It facilitates the gravity-fed return of lubricating oil from the turbocharger bearing housing to the engine crankcase. Constructed from high-temperature resistant carbon steel or stainless steel with precision-formed flanges, the assembly includes integrated sealing surfaces compatible with composite or metal gaskets. The routing geometry matches original equipment design to ensure clearance against engine block, exhaust manifold, and ancillary components. Flange bolt patterns and hose connection interfaces (where applicable) conform to Weichai drawing standards for WP10, WP12, WP13, and WD615 series engines. This component is critical for preventing turbocharger oil leakage, bearing starvation, and crankcase pressurization. Direct replacement for Weichai part number 1002109666.