Baldwin Filters · Form 561 Interchange · inline line
PT9223 filter element: specifications & equivalents
The PT9223 is a Baldwin Filters inline-line hydraulic filter element. Verify against the current manufacturer data sheet before ordering.
Line type inline
Partially verified. Fit and grade trace to an official interchange document;
dimensional values are compiled from 0 aftermarket listing(s)
and must be confirmed against the manufacturer housing drawing. Confidence score 0.80.
Form 561 is a cross-reference only — Baldwin prints no dimensions, micron rating, collapse pressure or seal data for this part number here. Verify every specification against the current Baldwin data sheet before ordering.
Specification table
| Parameter | Value |
|---|---|
| Filter type | inline line |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | PT9223 |
| Source catalog | Baldwin Filters: Baldwin Filters Form 561 |
| Last verified | 2026-09-30 |
Sources: Baldwin Filters — Baldwin Filters Form 561 — accessed 2026-09-30.
Baldwin Filters® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Baldwin Filters distributor.
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 2057922 page in verification queue | UFI | partial | Baldwin's Form 561 Number-Finder cross-reference lists 2057922 (HYDAC) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 834100 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists 834100 (LHA) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FI1251205 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FI 1251205 (HYDAC) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FISH77007 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FISH77007 (HIFI/JURA FILTRATION) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FISH77467 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FISH77467 (HIFI/JURA FILTRATION) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FST1071R0 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FST1071R0 (GRESEN) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GFS120B4T125 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GFS120B4T125 (FILTREC) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ HF35159 | Fleetguard | partial | Fleetguard's online catalog lists PT9223 as an interchange for HF35159. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ IX534100 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists IX534100 (FLOW-EZY) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ LSE25 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists LSE25 (LHA) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MSZ2010MCVB10 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists MSZ2010MCVB10 (SOFIMA) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MSZ2010MNB page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists MSZ2010MNB (SOFIMA) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ O25S125W page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists O25S125W (HYDAC) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RSS0700 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists RSS0700 (ZINGA) as replaced by Baldwin PT9223. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SFE25G125A10 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists SFE25G125A10 (HYCON) as replaced by Baldwin PT9223. 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.
How the PT9223 model number is decoded
- PT9223Baldwin filter part number per the Form 561 Number-Finder cross-reference.
Typical equipment & applications
- Hydraulic / transmission filtration — listed in the Baldwin Form 561 Number-Finder cross-reference.
Selection pitfalls — read before you substitute
- “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.
- Nitrile (NBR) seals are standard for mineral hydraulic oil but fail early in some phosphate-ester fluids and at sustained high temperature; verify seal compound against the fluid data sheet (fluorocarbon/Viton executions may be required).
- End-cap geometry and the number/position of O-rings block interchange even when OD and length match — visually compare end caps before fitting, especially with aftermarket cartridges.
Frequently asked questions
What replaces the PT9223 filter element?
15 partial match(es) requiring parameter review
How do I read the PT9223 part number?
See the designation decoder above: each segment of PT9223 encodes size, line type, filtration grade and media/collapse execution.
Is a same-envelope aftermarket element always a drop-in replacement?
No. Matching OD and length only proves the cartridge fits the bowl. End-cap style, seal compound, micron/Beta rating, collapse pressure and bypass configuration must also match; the table above tags every equivalent as full, partial or verify for exactly this reason.
How often should a hydraulic return-line element be replaced?
Replace at the housing manufacturer’s recommended differential-pressure setting (commonly signalled by a clogging indicator), or on a time-based service interval when no indicator is fitted — never wait for bypass to open continuously, because unfiltered oil then reaches the valves.
Other models in the Form 561 Interchange series
All 1208 →Reviewed & verified by the ElementRef engineering desk against Baldwin Filters on 2026-09-30. Read our editorial & correction policy.