Product Introduction:
The 803172683 and 803172684 are a matched set of primary (outer) and secondary (inner) air filters designed for use in XCMG construction machinery, particularly excavators . The 803172683 is the primary outer filter, and 803172684 is the secondary inner filter .
1. Installation Location
These filters are installed within the engine air intake housing. The outer filter (803172683) is the first-stage element, and the inner filter (803172684) is fitted inside it as a secondary safety element. Typical dimensions for this pair are approximately 310mm outer diameter and 524mm total height . They are used in various XCMG excavator models, including XE370BR and XE490DK .
2. Function
The primary filter (803172683) captures larger dust and dirt particles from the intake air . The secondary filter (803172684) acts as a backup, capturing finer particles that pass through the outer filter and protecting the engine if the primary filter is removed for maintenance or damaged . Together, they ensure only clean air reaches the engine for combustion, which is critical for performance and engine longevity .
3. Maintenance and Service
These are service items that require periodic inspection and replacement. The service interval depends on operating conditions, with filters needing more frequent replacement in dusty environments . The outer filter can sometimes be cleaned, but the inner filter should always be replaced if it becomes dirty. They are non-serviceable components; if clogged or damaged, they must be replaced as a set with identical 803172683 and 803172684 units. Always ensure the engine is off before servicing .
4. Important Notes
Always verify both part numbers match the original component specification for the specific machine model. These are original XCMG part numbers; compatible aftermarket alternatives from brands like Donaldson or Fleetguard may also be available . Use only the correct grade of filtration media to ensure proper engine protection.
