4719920 Original Excavator Fuel Filter for Hitachi ZX200-3

The original fuel filter (part number 4719920) is a genuine diesel filter element from the Hitachi ZX200-3 excavator, mainly used for the fuel supply system of the electronic fuel injection diesel engine equipped on this model. This filter is also widely used in Hitachi ZX210-3, ZX240-3, ZX330-3 and other 3 series electronic fuel injection excavators. Its universal number 4719920 is its unified identification in Hitachi's original factory and third-party accessory systems. When ordering, the complete excavator model and engine serial number need to be provided for verification to ensure that they match the specifications of the fuel pump, injector, and pipeline interface perfectly.

This product is a rotary diesel filter specifically designed for construction machinery, following the GB/T 20080-2017 "Road Vehicle Fuel Filters" standard. Its structure consists of a metal shell, stainless steel inner bracket, and high-efficiency folding filter paper (made of fiberglass material), with a filtration accuracy of 10-20 µ m, which can effectively intercept particulate impurities, moisture, and gum in fuel. The main technical indicators include: working temperature ≤ 100 ° C, working pressure difference ≤ 80kPa, and oil-water separation function. The sealing ring of the original filter element is made of oil resistant rubber material, ensuring long-term sealing reliability within the temperature range of -30 ° C to+120 ° C.

It is recommended to replace the filter every 500 hours of work or every 6 months, and shorten it to 250-300 hours in dusty, high humidity, or low-quality fuel conditions. Before replacement, the engine should be turned off and the fuel system pressure should be released. It is strictly prohibited to smoke or use open flames while operating in a cold state. When disassembling the old filter element, it is necessary to clean the sealing surface of the installation seat. Before installing the new filter element (4719920), a small amount of clean diesel should be applied to the sealing ring, and attention should be paid to the direction of the arrow (pointing towards the engine inlet end). Manually tighten according to the torque specified in the maintenance manual (usually 25-35N · m). Daily use of clean diesel that meets national/European standards, regular discharge of fuel tank sediment water, and inspection of oil circuit joints for leaks. Regular replacement can effectively prevent fuel injector blockage, oil pump wear, and engine power reduction, ensuring stable operation of the equipment.