MANN-FILTER · HD / WD Hydraulic · inline line
WD920/9 filter element: specifications & equivalents
The WD920/9 is a MANN-FILTER inline-line hydraulic filter element, sized 96 × 100 mm OD × length. Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 96 × 100 mm
Thread 1-12 UNF-1B
Line type inline
Catalog verified. Parameters extracted from the manufacturer’s electronic
catalog / official interchange document and checked 2026-09-28. Confidence score 0.92.
Dimensions and comparison numbers are taken from the MANN-FILTER online catalog API. Beta rating, collapse pressure and seal material vary by execution — verify against the current MANN data sheet before ordering.
Specification table
| Parameter | Value |
|---|---|
| Filter type | inline line |
| Outside diameter OD | 96 mm |
| Length | 100 mm |
| Thread / connection | 1-12 UNF-1B |
| End caps | spin-on baseplate with attached gasket |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | WD920/9_MANN-FILTER |
| Source catalog | MANN+HUMMEL / MANN-FILTER: MANN-FILTER online product catalog GraphQL API (mann-filter.com, store pcat_mf_en_store_en) |
| Last verified | 2026-09-28 |
Sources: MANN+HUMMEL / MANN-FILTER — MANN-FILTER online product catalog GraphQL API (mann-filter.com, store pcat_mf_en_store_en) — accessed 2026-09-27.
MANN-FILTER® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized MANN-FILTER distributor.
Dimensions & series range
| Outside diameter | 96 mm (3.780 in) |
| Overall length | 100 mm (3.937 in) |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ BT9553 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists BT9553 (BALDWIN) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FH50148 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists FH50148 (FINN-FILTER) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HG450W page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HG450W (HENGST) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HSM6209 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HSM6209 (COOPERSFIAAM) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ P959694 page in verification queue | Donaldson | partial | MANN-FILTER's online catalog lists P959694 (DONALDSON) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PH9417 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists PH9417 (FRAM) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SO11020 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SO 11020 (HIFI-FILTER (JURA FILTRATION)) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SPH94040 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SPH 94040 (SCHUPP / SF FILTER) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ TC4301 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists TC-4301 (SAKURA) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ WL10265 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists WL10265 (WIX) as a comparison number for WD9209. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ZP3166 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists ZP 3166 (FIL FILTER) as a comparison number for WD9209. Envelope cross-reference; 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 WD920/9 model number is decoded
- WD920/9MANN-FILTER hydraulic spin-on filter part number.
- 100 mmElement height (H).
- 96 mmOuter diameter (A).
- 1-12 UNF-1BSpin-on mounting thread.
- 2.5Bypass valve opening pressure.
Typical equipment & applications
- Replacement element for OEM hydraulic filter housings
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 are the dimensions of the WD920/9 filter element?
The published envelope is 96 mm OD × 100 mm length (3.780 × 3.937 in). Confirm against the housing drawing before ordering.
What replaces the WD920/9 filter element?
11 partial match(es) requiring parameter review
How do I read the WD920/9 part number?
See the designation decoder above: each segment of WD9209 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 HD / WD Hydraulic series
All 880 →Reviewed & verified by the ElementRef engineering desk against MANN+HUMMEL / MANN-FILTER on 2026-09-28. Read our editorial & correction policy.