Donaldson · FPK 03/04 · pressure line
P171737 filter element: specifications & equivalents
The P171737 is a Donaldson pressure-line hydraulic filter element, built with synteq synthetic media, standard-collapse execution media, rated at 8 µm absolute (β8(c) ≥ 1000 per ISO 16889 (Donaldson “B8” cartridge grade)). Verify against the current manufacturer data sheet before ordering.
Element length is taken from the FPK housing dimension table (column L); element OD/ID are not printed on this catalog page and are pending extraction from the dedicated element dimension table. Verify against the current Donaldson data sheet before ordering.
Specification table
| Parameter | Value |
|---|---|
| Filter type | pressure line |
| Media | Synteq synthetic media, standard-collapse execution |
| Filtration rating | 8 µm |
| Rating basis | absolute |
| Beta ratio | β8(c) ≥ 1000 per ISO 16889 (Donaldson “B8” cartridge grade) |
| Length | 345 mm |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | P171737 |
| Source catalog | Donaldson Company: Donaldson Hydraulic Filters eCatalog |
| Last verified | 2026-09-28 |
Sources: Donaldson Company — Donaldson Hydraulic Filters eCatalog — accessed 2026-09-26.
Donaldson® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Donaldson distributor.
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| ↔ D131G03A | Filtrec | partial | Filtrec's official Cross Navigator maps DONALDSON P171737 to FILTREC D131G03A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade. Rated micron differs (8 vs 5 µm) — verify efficiency class and collapse/seal for the housing before substituting. |
| ↔ PT23503-MPG | Baldwin Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists P171737 (DONALDSON) as replaced by Baldwin PT23503-MPG. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
Interchange levels: full catalog-confirmed drop-in · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
Full chart: Donaldson cross reference chart →
How the P171737 model number is decoded
- P171737Donaldson FPK cartridge element part number for the AP363 housing family (element family AP453).
- B8Media grade: 8 µm at βx(c) ≥ 1000 per ISO 16889.
- standard-collapseStandard-collapse execution (P1717xx range).
Typical equipment & applications
- Pressure-line hydraulic filters upstream of control valves
- High-differential-pressure industrial hydraulic circuits
- Hydraulic power units for steel, paper and power generation
Selection pitfalls — read before you substitute
- Line type is not interchangeable: return-line cartridges are low-collapse executions that typically tolerate roughly 10–20 bar differential, while pressure-line elements are commonly rated 100–210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
- “10 µm nominal” and “12 µm at β1000” can describe the very same media — one is reported at β≥200, the other at β≥1000 per ISO 16889. Compare ratings at the same Beta test point, not just the printed micron number.
Frequently asked questions
What micron rating does P171737 use?
What replaces the P171737 filter element?
How do I read the P171737 part number?
How often should a hydraulic filter element be replaced?
Other models in the FPK 03/04 series
All 36 →Reviewed & verified by the ElementRef engineering desk against Donaldson Company on 2026-09-28. Read our editorial & correction policy.