Baldwin Filters · Form 561 Interchange · inline line
H9051 filter element: specifications & equivalents
The H9051 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. | H9051 |
| 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 |
|---|---|---|---|
|
↔ 10708D03BH page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists 10708D03BH (HYDAC) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 57858 | WIX Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists 57858 (WIX) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 8902H02B08 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists 8902H02B08 (SEPARATION) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 8902H02V08 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists 8902H02V08 (SEPARATION) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 927723 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists 927723 (PARKER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ 927723Q | Parker | partial | Baldwin's Form 561 Number-Finder cross-reference lists 927723Q (PARKER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ A84858 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists A84858 (CARQUEST) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ALHC9021FUP8H page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists ALHC9021FUP8H (PA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ B2060797 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists B2060797 (HYDAC) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CHP0653A03HA page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists CHP0653A03HA (MPF) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CSBE9021803AV page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists CSBE9021803AV (BEHRINGER FLUID) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ CX932619Q page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists CX932619Q (PARKER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D112G03B page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists D112G03B (FILTREC) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D112G03BV page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists D112G03BV (FILTREC) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ DB645642V page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists DB645642V (MOOG) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ETBE9021803A page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists ETBE9021803A (BEHRINGER FLUID) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FIHY20551 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FIHY20551 (SFF) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FISP020F03B page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FI SP020F03B (STA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FK020GUB page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists FK020GUB (PT) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ G01435 page in verification queue | Parker | partial | Baldwin's Form 561 Number-Finder cross-reference lists G01435 (PARKER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GA925669 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GA925669 (PARKER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GA933578Q page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GA933578Q (PARR FILTERS) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GCH153FT21 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GCH153FT21 (MPF) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GHF7450 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GHF7450 (FL) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ GHM4A03HA page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists GHM4A03HA (MP FILTRI) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H90218003BH page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists H90218003BH (HYCON) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H90218003BHV page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists H90218003BHV (HYCON) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H90218003BN page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists H90218003BN (HYCON) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HC9021FKP8Z page in verification queue | Pall | partial | Baldwin's Form 561 Number-Finder cross-reference lists HC9021FKP8Z (PA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HC9021FUP8Z page in verification queue | Pall | partial | Baldwin's Form 561 Number-Finder cross-reference lists HC9021FUP8Z (PA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ HF30638 | Fleetguard | partial | Fleetguard's online catalog lists H9051 as an interchange for HF30638. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HP21L82MB page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists HP21L82MB (HY-PRO) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ KUFC7122A003BS page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists KUFC7122A003BS (FINN FILTER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ KV3045B2H03 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists KV3045B2H03 (VICKERS) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ KV3045V2H03 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists KV3045V2H03 (VICKERS) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ LH4999 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists LH4999 (LUBER-FINER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ LHC9021FDP8H page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists LHC9021FDP8H (PA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ LHC9021FKP8H page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists LHC9021FKP8H (PA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ LRHFR87450 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists LRHFR87450 (FLEETRITE) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ M1400EAH034N2 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists M1400EAH034N2 (PUROLATOR-FACET) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ M301105 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists M301105 (INTERNORMEN) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ MC7267 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists MC7267 (FRAM) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ N4330012832021 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists N4330012832021 (NS) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ NE3071VU03 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists NE3071VU03 (WESTERN TOOL CO.) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ NG4ZLZ5 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists NG4ZLZ5 (GRAINGER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ NP566337 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists NP566337 (DO) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ O7858 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists O7858 (NA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P01808005S63 page in verification queue | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P01808005S63 (FLUITEK) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P01808005U63 page in verification queue | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P01808005U63 (FLUITEK) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P1400EAH034F2 page in verification queue | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P1400EAH034F2 (PUROLATOR-FACET) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ P167182 | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P167182 (DONALDSON) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P3I1706 page in verification queue | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P3I1706 (CATERPILLAR) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P8T5550 page in verification queue | Donaldson | partial | Baldwin's Form 561 Number-Finder cross-reference lists P8T5550 (CAT) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ R3902SGCV08 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists R3902SGCV08 (SET) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ R921H0803A page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists R921H0803A (FAIREY-ARLON) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RKMP3803 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists RKMP3803 (MPF) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RSBF90218S1B page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists RSBF90218S1B (SCHROEDER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ RSBF90218Z3V page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists RSBF90218Z3V (SCHROEDER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SB645642 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists SB645642 (MOOG) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SBF90218S1V page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists SBF90218S1V (SCHROEDER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ SBF-9021-8Z3B | Schroeder Industries | partial | Baldwin's Form 561 Number-Finder cross-reference lists SBF90218Z3B (SCHROEDER) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ SP-020-F-03-B | STAUFF | partial | STAUFF Filter Interchange lists H9051 (BALDWIN) as replaced by SP-020-F-03-B. Envelope dimensions are published; media grade and performance data are not — confirm before substituting in cleanliness-critical circuits. |
|
↔ TIHF30638 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists TIHF30638 (FLEETGUARD) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ USP020F03V page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists USP020F03V (STA) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ VA9314361 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists VA9314361 (PU) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WGPP92108 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists WGPP92108 (WOO) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ X590213VG210EP8 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists X590213VG210EP8 (INTERNORMEN) as replaced by Baldwin H9051. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ X94203 page in verification queue | Aftermarket | partial | Baldwin's Form 561 Number-Finder cross-reference lists X94203 (CARQUEST) as replaced by Baldwin H9051. 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 H9051 model number is decoded
- H9051Baldwin 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 H9051 filter element?
68 partial match(es) requiring parameter review
How do I read the H9051 part number?
See the designation decoder above: each segment of H9051 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.