4090405 Air Filter for Hitachi ZX200-3 Excavator

Part number 4090405 is the original air filter assembly specially designed by Hitachi for the ZX200-3 hydraulic excavator. The universal model of this component is its part number itself, which is specific to the ZX200-3 model and may also be applicable to the same platform models (such as ZX200-5G, ZX210-3) that use the same engine intake system design. As the core component of the original intake system, its interface size, sealing structure, and assembly design are precisely matched with the engine intake pipeline

This product is a rotary dry air filter assembly, with a black cylindrical engineering plastic shell that is sturdy and durable. The white "HITACHI" brand logo is clearly printed on the top. One end of the casing is equipped with a metal clamp and interface for reliable sealing connection with the engine intake pipe. It integrates high-performance cellulose and synthetic fiber composite filter materials internally, and adopts a star shaped pleated design to provide a huge filtration area, which can efficiently intercept dust, impurities and other particulate matter in the air with high filtration accuracy. This modular design typically includes a main filter element and may integrate a safety filter element to provide dual protection, ensuring continuous and clean intake to the engine. It is the first and most important barrier to ensure engine power and lifespan.

Inspection and replacement cycle: It is recommended to check the appearance of the filter and the connection of the intake pipe for firmness and damage every 250 working hours. The regular replacement cycle is every 1000 working hours or once a year. In dusty and harsh working conditions such as mines and buildings, it must be significantly shortened to 500 working hours or less. Replacement operation: 1 Disassembly: Loosen the metal clamp at the connection of the housing and carefully remove the old filter assembly (4090405). 2. Cleaning: Wipe the mounting socket interface with a clean damp cloth to ensure that the sealing surface is clean. 3. Installation: Align the new filter assembly with the interface and place it steadily. After pressing it down by hand, use a tool to tighten the clamp to the specified torque to ensure absolute sealing and prevent unfiltered air leakage.