Donaldson
The Donaldson P566661 is a 20µm microglass fuel filter element. It measures 1.85" OD x 0.87" ID x 6.02" long. Filtration efficiency is rated at β200 ≥ 20 per ISO 16889. Seals are VITON, rated for -13°F to 250°F. Collapse pressure rating is 435 PSID. 5 verified cross-references are available from aftermarket manufacturers.
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5 Cross-References Available
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Technical specifications for the Donaldson P566661 filter element. Data sourced from manufacturer catalogs and verified against OEM documentation.
| Specification | Value |
|---|---|
| Micron Rating | 20µm |
| Media Type | MICROGLASS |
| O.D. (inches) | 1.85" |
| I.D. (inches) | 0.87" |
| O.A.L. (inches) | 6.02" |
| Collapse Rating | 435 PSID |
| Efficiency (ISO 16889) | β200 ≥ 20 |
| Seal Material | VITON |
| Flow Direction | OUTSIDE-IN |
| Operating Temperature | -13°F to 250°F |
Last verified: February 2026
5 verified cross-references available from Denison, Vickers. All cross-references are reviewed for dimensional and performance compatibility.
| Manufacturer | Part Number | Confidence |
|---|---|---|
| Denison | Request part number | Verified |
| Vickers | Request part number | Verified |
These are equipment manufacturer part numbers that the Donaldson P566661 is a verified replacement for. The original part numbers may appear on equipment nameplates, service manuals, or OEM parts catalogs.
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Last verified: February 2026
The DONALDSON P566661 is designed for use in industrial filtration applications. Rated at 20µm. VITON seals provide compatibility with petroleum-based fluids, synthetic fluids, phosphate esters, and water-glycol mixtures.
The 435 PSID collapse rating indicates the maximum differential pressure this element can withstand during cold starts or bypass conditions without structural failure. Ensure your system's maximum differential pressure does not exceed this rating.
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