Excavator Filters
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Round primary air-filter element identified by Donaldson number P181042. Published specifications identify the STG family, 99.9% ISO 5011 efficiency, cellulose media, approximately 372.9 mm outside diameter, 262.6 mm inside diameter and 610.1 mm element length. The manufacturer off-road filtration record identifies the Donaldson STG16 air cleaner as the primary application and P128408 as the associated inner/safety element. P128408 is not presented as interchangeable with P181042.
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
| Relationship | Reference family | Number |
|---|---|---|
| Primary Manufacturer Part Number | Donaldson primary round air-filter element | P181042 |
| Associated Inner / Safety Element | Paired element in STG16 air cleaner; not interchangeable | P128408 |
| Published Cross-Reference | Fleetguard reference in the manufacturer cross-reference table | AF1605M |
| Manufacturer Alternate Primary Element | Alternate primary element for the same STG16 air cleaner | P182042 |
Product fitment guide
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Part identification
Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.
Product summary
Before ordering
Machine fitment
2 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
Quick fitment answers
Recorded compatible model references include Air-cleaner family: Donaldson STG16, Fitment limitation: Confirm P181042, 372.9 x 262.6 mm diameters, length, seal face and air-cleaner housing. Confirm the complete part number and machine serial range before ordering.
No alternate number is listed for P181042. Send the original nameplate for an alternate-number check.
Match the complete part number on the original component. Compare connectors, mounting points and visible dimensions with the product photos. Confirm the exact machine or engine model and serial range before ordering. Send clear photos of the original unit and connector layout when requesting a quote.
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