Weichai 1000125657 Turbocharger Oil Pipe Assembly

The turbocharger oil feed pipe assembly delivers pressurized engine oil to the turbocharger bearing housing, forming a hydrodynamic film supporting the shaft rotating at speeds up to 150,000 rpm. Constructed from high-temperature resistant steel tubing with reinforced flexible hose sections and precision-formed banjo fittings. Designed to withstand engine oil pressure cycles and thermal expansion. Direct replacement for Weichai part numbers 1000125657 and 612650110057. Compatible with Weichai WP12, WD12, and P12 series 12-liter diesel engines used in heavy-duty commercial vehicles and construction machinery. Material composition includes carbon steel fittings, stainless steel braided hose or high-temp rubber liner, and HNBR sealing washers. Installation requires torque specification compliance for banjo bolts to prevent leakage. OEM cross-reference interchange includes Weichai 612650110057.