Donaldson P821575 Air Filter Replacement | Cross Reference & Dimensions
Donaldson P821575 air filter Cross Reference
Donaldson P821575 Replacement Primary Air Filter
P821575 is a Donaldson primary RadialSeal™ engine air filter from the FPG family, designed
for Donaldson FPG05 air cleaners. It is paired with the P822858 safety (inner) element as a
service set. DeMalong Filter manufactures a fully equivalent aftermarket replacement.
Specifications
| Filter Type | Primary radial-seal engine air filter |
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| OEM Manufacturer / Supplier | Donaldson |
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| Filter Media | High-efficiency cellulose with Pleatloc™ even pleat spacing and corrosion-resistant coated steel liners |
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| Outer Diameter | 105.5 mm (4.15 in) |
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| Inner Diameter | 60.1 mm (2.37 in) |
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| Length | 265 mm (10.43 in) |
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| Efficiency | 99.9% |
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| Test Standard | ISO 5011 |
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| Filter Family | FPG (fits Donaldson FPG05 air cleaners) |
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| Matched Safety Element | P822858 |
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OEM & Equivalent / Cross Reference Part Numbers
| Brand | Part Number |
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| Donaldson | P821575 (primary) / P822858 (safety) |
| Baldwin | RS3704 |
| Fleetguard | AF25551, AF25575 |
| WIX | 46438NP |
| FRAM | CA9550, CA9550S, CA9591 |
| Hastings | AF2279 |
| Bobcat / Clark | 6669547, 6672467 |
| Caterpillar | 1213661, 1467172, 1467472, 2483864, 3I2147 |
| Case / Case IH | 86401594, 87300178, 87300179, 87682998, N102248 |
| Kubota | R141142270 |
| Yanmar | 1190812520 |
| Isuzu / Hyundai / Takeuchi | 5864014350 / XJDH01893 / TY12900412520 |
| Genie / Generac | 834460 / OE3557 |
| Chicago Pneumatic / Airman-Hokuetsu | 1310606693 / 3214311500 |
| Carquest / Big A / NAPA-type | 88438 / 94438 |
| DeMalong Filter (our equivalent replacement) | Contact us for our part number |
Over 250 cross references exist for this part; the most common are listed above. Cross reference numbers are for identification purposes only. DeMalong Filter Inc. products are aftermarket replacements, not affiliated with, sponsored by, or manufactured by Donaldson.
Application Equipment & Industries
- Bobcat and Clark skid steer loaders and compact equipment
- Case / Case IH agricultural and construction machinery
- Kubota, Yanmar, and Isuzu powered equipment
- Genie aerial work platforms and Generac generator sets
- Chicago Pneumatic and Airman portable compressors
- Zero-turn mowers and commercial turf equipment
Always replace the P822858 safety element together with the P821575 primary element.
Quality & Testing
DeMalong Filter elements are manufactured under ISO 9001 quality management and tested to
ISO 5011, matching the OEM's 99.9% efficiency rating. The radial seal design prevents
unfiltered air from bypassing the element even under heavy vibration, and corrosion-
resistant liners maintain airflow and structural integrity throughout the service interval.
Packaging, Lead Time & Customization
| Packaging | Individual carton with DeMalong brand and part number, or neutral/customer-branded packaging on request |
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| Samples | Available for testing and fitment verification before bulk order |
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| Customization | Primary and safety elements available separately or as a matched set; private labeling available |
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| Lead Time & MOQ | Varies by order quantity — contact us for a specific lead time and MOQ quote |
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Frequently Asked Questions
- What are the exact dimensions of P821575?
- 105.5 mm outer diameter, 60.1 mm inner diameter, 265 mm long (4.15 x 2.37 x 10.43 in).
- Do I need the P822858 safety element too?
- Yes, in FPG05 air cleaners the P822858 inner safety element should be replaced alongside the primary — it protects the engine during primary element servicing.
- What efficiency does this filter deliver?
- 99.9% per ISO 5011 testing.
- Why does this filter have so many cross references?
- The FPG05 air cleaner housing is used by a wide range of OEMs — Bobcat, Case, Kubota, Genie, Generac and many others — so each assigns its own part number to the same element.
- Is your replacement a genuine Donaldson part?
- No. It is an aftermarket equivalent engineered to match the OEM's dimensions, media, and filtration performance.
- Filter Model: P821575
- Operating Temperature: -30°C to +110°C
- Seal Material: Fluorine rubber ring
- Filter Precision: Available in various precision options including 1, 3, 6, 12, 25μm, etc.
- Filter Ratio: X≥100
- Structural Strength: 21.0Mpa
- Packaging: Carton packaging
Applicable Equipment and Industries
- Applicable Equipment: Hydraulic systems, lubrication systems, dust collectors, power generation equipment, computer hard disk drives, compressed air purification equipment, construction equipment, mining equipment, compressors, and trucks.
- Applicable Industries: Widely used in industries such as petroleum, chemical fibers, chemical, power, pharmaceutical, and machinery.
Performance Features
- Axial Rigidity: No deformation or damage when subjected to axial loads as per industrial process documents.
- Compression Rigidity: No deformation or damage when subjected to the limit pressure drop as per industrial process documents.
- Pressure Drop Flow Characteristic: Should comply with the pressure drop flow characteristic curve of standard filters in industrial process documents.
- Flow Fatigue Characteristics: Excellent flow fatigue characteristics under standard flow and pressure drop conditions.
Similar Models
You know you have received a quality DeMalong Filter hydraulic filter when you our logo on the filter box with our brand name and part number.
Our filters are built with the highest quality and reliability in mind so you know your equipment is safe and can keep running smoothly.
DeMalong Filter hydraulic filters can be used in a variety of industries including but not limited to: power generation, defense, oil/gas, marine and other motor sports, shipping and transportation, railroad, mining, pulp and paper, steel making and manufacturing, entertainment and various other industries.
All of our elements are manufactured according to ISO specifications, including: ISO 16889, Clean DP (low and high visc.) - ISO 3968, Fluid compatibility - ISO 2943, Flow fatigue resistance - ISO 3724, Dirt capacity - ISO 16889, Collapse pressure - ISO 2941
All items marked "Replacement" or "Interchange" are not affiliated with the original manufacture where names and part numbers are for cross reference only. All trademarks are trademarks of their respective owners. Reference is made to the OEM solely to identify the compatibility of DeMalong Filter Inc. filter with the OEM filter.
Images may be general representations of products and may vary from image. All items are sold by 1 unit unless a pack size is listed in the title description.
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