Donaldson 45252, direct aftermarket replacement. This filter is an aftermarket hydraulic filter designed as a direct replacement for filters from brands including Airfil, Atos, Donaldson, Fai Filtri, Fleetguard-ST, Imer, Omt, Oxfil, Pegson, Preciculture, Sofima (UFI), and Woodgate. It features inorganic microfibers media with a 12 µm filtration rating, providing reliable protection for hydraulic systems. With a total height of 116 mm and an outer diameter of 54 mm (largest outer diameter 56 mm), this filter is built to the original dimensions and ratings. The flow direction is out-in, and the largest inner diameter is 27.4 mm. This aftermarket filter offers a cost-effective solution without compromising on performance.
Technical properties & cross references
Specifications
| Filtration Media |
Inorganic Microfibers 12 µm |
| Media type |
Inorganic Microfibers |
| Filtration Rating |
12 µm |
| Flow direction |
Out-In |
| Total Height |
116 mm (4 9/16") |
| Largest Inner Diameter |
27.4 mm (1 3/32") |
| Outer Diameter |
54 mm (2 1/8") |
| Largest Outer Diameter |
56 mm (2 7/32") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| FilterFinder Online |
USD 30.00 |
11 Oct 2026 |
| Oxfil |
USD 36.99 |
16 Oct 2026 |
| Filtration Point |
USD 44.01 |
11 Oct 2026 |
| Cardinal Filters |
USD 47.23 |
11 Oct 2026 |
| Hydrafil |
USD 72.95 |
11 Oct 2026 |
| Spare Part Mart |
USD 24.00 |
Today |
Our price of USD 24.00 is 20% to 67% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
High-Contamination Environments
In applications where hydraulic systems are exposed to dust, dirt, or debris, the 12 µm inorganic microfibers media effectively captures fine particulates. This helps prevent premature wear of pumps, valves, and cylinders, extending equipment life.
Continuous-Duty Machinery
For equipment that operates continuously, such as in manufacturing or processing plants, this filter maintains consistent oil cleanliness. Its robust construction reduces the risk of clogging, allowing for longer intervals between replacements.
Fleet Maintenance Simplification
Fleet operators with mixed equipment from brands like Imer and others can standardise on this filter. One part number covers multiple machines, simplifying inventory management and reducing downtime.
Cost-Sensitive Operations
As an aftermarket alternative, this filter provides a budget-friendly option for operators looking to lower maintenance costs. It delivers the required filtration performance without the premium price of branded filters.
Frequently asked questions
How do I confirm this filter fits my equipment?
Check your existing filter's dimensions: total height 116 mm, outer diameter 54 mm (largest 56 mm), largest inner diameter 27.4 mm. It is compatible with equipment from Imer and cross-references brands listed. If your filter matches these specs, it will fit.
What is the filtration rating and media type?
This filter uses inorganic microfibers media with a 12 µm filtration rating. It is designed for hydraulic systems requiring fine particle removal to protect sensitive components.
Will the thread or mounting dimensions match my housing?
The largest inner diameter is 27.4 mm, and the largest outer diameter is 56 mm. The flow direction is out-in. Ensure your housing accommodates these dimensions. No thread specification is provided; verify with your existing filter.
Is this filter genuine OEM or aftermarket?
This is an aftermarket replacement, not genuine OEM. It is built to the original dimensions and ratings and is a direct replacement for filters from brands like Donaldson, Fleetguard-ST, and others listed.
How do I install this filter?
Installation is straightforward: remove the old filter, clean the mounting surface, and install the new filter by hand-tightening. Ensure the flow direction (out-in) matches your system. No special tools are required.