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| Filtration Media | Borosilicate micro glass fibre 3 µm |
| Media type | Borosilicate micro glass fibre |
| Filtration Rating | 3 µm |
| Flow direction | Out-In |
| Gasket | Organic fiber bonded NBR / SBR 2 |
| Body Height | 230 mm (9 1/16") |
| Height-1 | 12 mm (15/32") |
| Height-2 | 13 mm (1/2") |
| Total Height | 255 mm (10 1/32") |
| Thread | M M8 Male Top 1.25 mm |
| Type | M |
| Thread Size | M8 |
| Orientation | Male |
| Position | Top |
| Product Net Weight | 2.4 kg (5.29 lbs) |
| Largest Inner Diameter | 122 mm (4 13/16") |
| Outer Diameter | 168 mm (6 5/8") |
| Largest Outer Diameter | 220 mm (8 21/32") |
| Stat. HS-Code | 84149000 |
| Country of Manufacture | China |
| Brand | Code |
|---|---|
| Air Maze | GS01004 |
| Air Supply Co (ASC) | 10070709 |
| Atlas Copco | 1619549800 |
| Atlas Copco | 1619549801 |
| Atlas Copco | 2911001300 |
| Cap | CAP310323 |
| Cap | CAP312522 |
| Digoema | DGMHDC3005 |
| Donaldson | P525186 |
| Donaldson | P525771 |
| Fai Filtri | DFF-170230-01 |
| Fai Filtri | DFF-170230-03 |
| Flam | SU1202 |
| Fleetguard | AS2203 |
| HiFi Filter OT | 5498 |
| Keltec | KV130003 |
| Locker Air Maze | D19659 |
| Mann-Filter / Mann & Hummel | 4900050511 |
| Mann-Filter / Mann & Hummel | 4900252281 |
| Mann-Filter / Mann & Hummel | 4900253281 |
| Mann-Filter / Mann & Hummel | 4900255421 |
| Noitech NS | 000530 |
| Oxfil | SP.3005 |
| SF Filter | SAO58730 |
| Sotras | DC3005 |
| Sotras DC | 3005 |
| Spare Part Mart | SPM-SEP-1087 |
| T.G. Filter | 3170230 |
| Technolab | DV010402 |
| United Air Filter | S138D0012 |
| United Air Filter | S138D0931 |
| Woodgate | WGOS5498 |
Found this part cheaper somewhere else? Send us the listing and we'll beat any genuine competitor's price under our Price Beat Guarantee. We continually benchmark the market so you don't have to, so you can buy with confidence knowing you're getting the best available price on Donaldson P525771.
Portable Compressor Operation
Ideal for Atlas Copco portable compressors like XA 40 D and XAS 50, this separator ensures clean air delivery on remote job sites. Its 3 µm filtration protects downstream equipment from contamination, reducing downtime.
Continuous-Duty Industrial Applications
In factories with continuous compressed air usage, the SPM-SEP-1087 maintains consistent filtration without frequent element changes. The borosilicate media handles high flow rates while trapping fine particulates.
Harsh Environment Performance
Designed for dusty or polluted environments, the out-in flow direction and durable gasket prevent bypass leakage. This extends service intervals and protects sensitive pneumatic tools.
Inventory Consolidation for Fleets
Cross-referencing multiple brands including Donaldson and Fleetguard, this single separator simplifies stock management for mixed-equipment fleets. One part number covers various compressor models, reducing inventory complexity.
Check your compressor model against the verified list: XA 40 D, XA 50, XASS 40, XAS 50, XAS 40, XASS 60, XA 60, XA 40, XASS 50, XAS 50 D, XAS 40 D, XA 50 D, XAS 60. If your model is listed, this separator is a direct fit.
It uses borosilicate micro glass fibre media with a 3 µm filtration rating. This media is effective at trapping fine particles and moisture aerosols.
Total height is 255 mm, body height 230 mm, outer diameter 168 mm, largest outer diameter 220 mm, largest inner diameter 122 mm. The thread is M8 male (1.25 mm pitch) located on the top.
This is an aftermarket replacement built to match OEM specifications. It is not a genuine OEM part but is designed to directly replace brands like Air Maze, Donaldson, Fleetguard, and others.
Installation is straightforward: remove the old separator, clean the mounting surface, and screw the new separator onto the M8 male thread. Ensure the gasket seals properly. No special tools are required.
We offer worldwide shipping with tracking. Your purchase is covered by a 30-day money-back guarantee and our price-beat guarantee.
Orders typically require 1–3 business days for processing. During this time, we confirm product availability and prepare the shipment for consolidation.
We offer two shipping tiers designed to meet your operational needs. The exact costs for all shipping options will be displayed at checkout.
Express Shipping (UPS, DHL, etc.)
Ideal for urgent needs. Estimated delivery time is typically 3–5 business days after processing.
Economy Shipping
Our standard, cost-effective option. Estimated delivery time is typically 5–10 business days after processing.
Shipping costs are calculated at checkout based on your location and selected shipping method.
Once your order ships, you'll receive a tracking number via email so you can monitor your delivery.
For detailed delivery information and FAQs, please visit our Delivery Information page or contact us.

