MANN-FILTER · HD / WD Hydraulic · inline line
WD940 filter element: specifications & equivalents
The WD940 is a MANN-FILTER inline-line hydraulic filter element, sized 93 × 147 mm OD × length. Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 93 × 147 mm
Thread 3/4-16 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 | 93 mm |
| Length | 147 mm |
| Thread / connection | 3/4-16 UNF-1B |
| End caps | spin-on baseplate with attached gasket |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | WD940_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 | 93 mm (3.661 in) |
| Overall length | 147 mm (5.787 in) |
All 93×147 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 1500917 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 1500917 (TRP DAF (TRUCK AND TRAILER)) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 1534764 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 1534764 (TRP DAF (TRUCK AND TRAILER)) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 197047 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists 197047 (FEBI-BILSTEIN) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 4464162140 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists 44.64.162/140 (FRAD) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 5081724 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 5081724 (MAHLE (KNECHT/MAHLE)) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 8600800 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 86.008.00 (UFI) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ BT8922 | Baldwin Filters | partial | Baldwin's Form 561 Number-Finder cross-reference lists WD940 (MANN & HUMMEL) as replaced by Baldwin BT8922. Form/fit listing without published performance data — verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ DGMH940 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists DGM/H 940 (DIGOEMA FILTER) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ F96EP page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists F 96 EP (FAMEL) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FY5140 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists FY 5140 (FILSAN) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H17WD01 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists H17WD01 (HENGST) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HC8 page in verification queue | Pall | partial | MANN-FILTER's online catalog lists HC 8 (MAHLE (KNECHT/MAHLE)) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ HF6315 | Fleetguard | partial | Fleetguard's online catalog lists WD940 as an interchange for HF6315. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HI9144 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HI 9144 (UNICO) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HY17WD01 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HY17WD01 (HENGST) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ KL320014 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists KL320-014 (KELTEC) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ NO105180 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists NO 105180 (NOITECH) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ NO9314031 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists NO-93/140.31 (ARMAFILT) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ PER205H page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists PER 205 H (PUROLATOR) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ S8608HP page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists S 8608 HP (SOFIMA) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH8112 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SH 8112 (STANDARD AIR) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH8154 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SH 8154 (STANDARD AIR) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SO8352H page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SO8352H (FILMAR) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SP1206 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SP-1206 (ALCO) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SPH21002 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SPH 21002 (SCHUPP / SF FILTER) as a comparison number for WD940. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ ZM126 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists ZM126 (MISFAT) as a comparison number for WD940. 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 WD940 model number is decoded
- WD940MANN-FILTER hydraulic spin-on filter part number.
- 147 mmElement height (H).
- 93 mmOuter diameter (A).
- 3/4-16 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 WD940 filter element?
The published envelope is 93 mm OD × 147 mm length (3.661 × 5.787 in). Confirm against the housing drawing before ordering.
What replaces the WD940 filter element?
26 partial match(es) requiring parameter review
How do I read the WD940 part number?
See the designation decoder above: each segment of WD940 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.
Same-envelope elements from other brands
View full interchange →These 24 catalog element(s) share the 93×147 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
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.