1154158491 Excavator ISUZU 6BG1 Engine Injection Pipe for ZX200 

Part number 1154158491 is an original high-pressure fuel injection pipe (high-pressure oil pipe) specifically designed for the Isuzu 6BG1 series diesel engine. Its common part number is often labeled as 1-15415849-1 or 1-15415849-0. This component is mainly suitable for multiple Hitachi medium-sized hydraulic excavators equipped with this engine, including ZX200, ZX200-3G, ZX210, ZX230, ZX240-3G, ZX250-3G, ZX270, and EX200-5 models.
 

This product is an Isuzu original high-pressure fuel injection pipe, which is the core component of the engine common rail fuel system that withstands the highest pressure and delivers fuel to the designated cylinder (third cylinder) injector. Its core function is to ensure precise fuel delivery without leakage or pressure loss at injection pressures of up to 1800-2000 bar, directly affecting the engine's power, economy, and emission levels. Oil pipes are usually made of multi-layer co extruded high-strength alloy steel pipes, with smooth inner walls to reduce flow resistance, and external anti-corrosion coatings and braided sheaths to withstand the continuous vibration, high temperature, and chemical corrosion of the engine compartment.
 

Installation and inspection: The replacement of this high-pressure fuel injection pipe must be carried out after the engine is turned off and the fuel system is completely depressurized. Before installation, it is necessary to thoroughly clean the joints at both ends of the oil pipe, as well as the interfaces of the fuel injector and oil pump, to ensure that there are no impurities. Brand new original sealing gaskets or sealing cones must be used, and the connecting nuts must be tightened strictly according to the order and torque specified in the maintenance manual (using a torque wrench). Excessive or insufficient torque can cause leakage or damage to the joint. After installation, start the engine and carefully inspect all connections for fuel leaks.