YA00005377 Isuzu 6WG1 Engine Assembly for Hitachi ZX870-5G Excavator

Part number YA00005377 is the original Isuzu 6WG1 engine assembly used by Hitachi Construction Machinery for the ZX870-5G series ultra large hydraulic excavator. The Hitachi ZX870-5G series is equipped with different versions of the 6WG1 engine based on specific models (such as ZX870LCH-5G, ZX870H-5G), such as Isuzu BB-6WG1XQA-04 (rated power 360kW) or Isuzu AH-6WG1XYSA-03 (rated power 397kW). Therefore, as the original assembly number YA00005377, the specific engine model (including power, emission standards, etc.) corresponding to it needs to be verified with Hitachi official or authorized dealers based on the year of manufacture, specific model, and body serial number of your equipment to ensure complete matching. This assembly is designed specifically for the ZX870-5G and is highly integrated with the entire machine in terms of engine compartment layout, installation points, accessory interfaces, and other aspects

This product is a complete Isuzu 6WG1 series diesel engine assembly, with the core being a heavy-duty diesel engine consisting of an inline six cylinder, four stroke, water-cooled, turbocharged, and high-pressure common rail direct injection system. Performance: Depending on the specific model, the rated power ranges from 360kW to 397kW (approximately 490-540 horsepower), the rated speed is 1800rpm, and the maximum torque can reach 2250N · m (output at 900-1300rpm), with low speed and high torque characteristics, and outstanding fuel economy. Emission standards: Meet China's fourth phase (National IV) emission requirements. As an original assembly, it includes all core components and accessories such as cylinder block, cylinder head, crankshaft, connecting rod, piston, turbocharger, high-pressure oil pump, injector, oil pump, water pump, generator, starter, etc. All components comply with Hitachi's strict assembly accuracy and material standards, ensuring seamless integration with the hydraulic, electrical, and cooling systems of the entire machine.

Daily maintenance: Strictly follow the maintenance cycle specified by Hitachi, change the oil and filter every 500 working hours, and regularly clean or replace the air filter and fuel filter. Check the turbocharger, fan belt tension, and cooling system every 1000 working hours. Attention: Be sure to use engine oil, filters, and coolant; Prioritize using the correct repair kit (including all gaskets and oil seals) during maintenance; Long term storage requires rust prevention treatment and regular turning. This engine assembly is the core power source of the equipment, and its procurement, installation, and maintenance require extremely high professionalism