8982806971 Original Isuzu 4HK1 6HK1 Engine Fuel Injector for Engineering Excavator

Part number 8982806971 (also known as 8-98280697-1) is an original Isuzu electronic fuel injection engine injector assembly designed specifically for the 4HK1 and 6HK1 series high-pressure common rail diesel engines. This engine is widely used in multiple hydraulic excavators from Hitachi and Sumitomo brands. According to publicly available accessory information, the main compatible models include Hitachi ZX240-5A, ZX330-5A, as well as Sumitomo SY235-10, SY365-10, etc. This part is a genuine original product, and its universal part number is 8982806971 or 8-98280697-1. It must be verified based on this during procurement.

This injector is the core executing component of the electronically controlled high-pressure common rail fuel system. Its core function is to spray fuel into the cylinder in a very fine atomization state under extremely high pressure according to precise instructions from the engine control unit (ECU), achieving efficient and clean combustion. As an original component, it is made of precision machined porous fuel injectors, high-performance solenoid valves, and high-temperature resistant alloy materials, capable of withstanding common rail pressures exceeding 2000 bar. It integrates precision needle valve components and electromagnetic drive mechanism internally, with extremely fast response speed, and can achieve multiple injections in a single cycle to optimize the combustion process, reduce noise and emissions.

The maintenance core of this injector is to maintain fuel cleanliness, conduct regular diagnosis, and standardize disassembly and assembly. Fuel system maintenance: High cleanliness diesel fuel that meets standards must be used, and fuel filters must be replaced regularly to prevent impurities from wearing down precision components. Before installing a new fuel injector, it is necessary to clean the installation hole and replace the sealing ring. When tightening, a torque wrench must be used to strictly follow the torque values specified by the original factory: the tightening torque of the fuel injector clamp bolt is 19 N · m, the fuel injection pipe socket nut is 30 N · m, and the fuel injection pipe clamp is 6 N · m. After installation, leakage testing and adaptive learning of fuel injection quantity are required.