Donaldson
Donaldson P551801
Industrial filter element
Donaldson P551801 specifications
The Donaldson P551801 is a 20µm filter element. It measures 4.22" OD x 1.69" ID x 2.3" long. Filtration efficiency is rated at 75 per ISO 16889. 1 verified cross-reference is available from aftermarket manufacturers. Specifications verified. Last reviewed: May 2026
Physical fit
- Outer Diameter (O.D.)
- 4.22"OEM-published
- Inner Diameter (I.D.)
- 1.69"OEM-published
- Overall Length
- 2.3"OEM-published
- Micron Rating
- 20µmOEM-published
- Seal Material
- Not yet verified from an OEM source
- Connection / Thread
- Not yet verified from an OEM source
Performance: Donaldson published values
These are Donaldson's own published numbers. Performance specs differ by brand and are never inherited across cross-references.
- Efficiency (ISO 16889)
- 75
About the Donaldson P551801
FUEL FILTER, WATER SEPARATOR CARTRIDGE
What replaces the Donaldson P551801?
1 published cross-reference on file. Select to expand.
What replaces the Donaldson P551801?
1 published cross-reference on file. Select to expand.
A cross-reference confirms dimensional fit and micron rating, not performance equivalence. Beta ratio, collapse rating, media, and service life can differ between brands.
Published cross-references
| Part Number | Manufacturer | Match |
|---|---|---|
| 101 | Solberg | Verified |
Application & Compatibility
The DONALDSON P551801 is designed for use in industrial filtration applications. Rated at 20µm.
Frequently Asked Questions
What micron rating is the Donaldson P551801?
What are the dimensions of the Donaldson P551801?
Is there a cross-reference for the Donaldson P551801?
How this entry is verified
Every specification on this page names its source: manufacturer documents first, distributor catalogs second, decoded part-number patterns labeled as such. When a value has not been verified from an OEM source, the cell says so. Cross-references are fit claims, never performance claims.
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