Weichai 612630110348 Turbocharger Oil Feed Pipe Assembly

The 612630110348 turbocharger oil feed pipe is a critical lubrication system component designed to supply pressurized engine oil to the turbocharger bearing cartridge. It is engineered for Weichai WP12 and WP13 series heavy-duty diesel engines equipped with GTA42 frame turbochargers, commonly installed in Sinotruk Howo tractor and dump truck platforms. Constructed from high-temperature resistant steel tubing with precision-formed banjo fittings at both ends, the assembly includes integrated sealing surfaces for copper or aluminum crush washers. The routing geometry matches the original equipment installation path between the engine block oil gallery port and the turbocharger center housing inlet. The component withstands continuous operating pressures up to 1.5 MPa and peak thermal cycles exceeding 250°C at the turbocharger connection point. This part number cross-references to Weichai drawing 612630110258 and applies to GTA42 turbocharger configurations. Installation requires torque tightening of banjo bolts to 25-30 Nm with new sealing washers to prevent oil leakage and ensure bearing lubrication integrity.