MANN-FILTER · HD / WD Hydraulic · inline line
HD612/1 filter element: specifications & equivalents
The HD612/1 is a MANN-FILTER inline-line hydraulic filter element, sized 56 × 118 mm OD × length (ID 26 mm). Verify against the current manufacturer data sheet before ordering.
Envelope OD × L 56 × 118 mm
Inside diameter 26 mm
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 | 56 mm |
| Inside diameter ID | 26 mm |
| Length | 118 mm |
| End caps | open-ended cartridge element |
| Integral bypass valve | none (housing/valve-dependent) |
| Manufacturer part no. | HD612/1_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 | 56 mm (2.205 in) |
| Inside diameter | 26 mm (1.024 in) |
| Overall length | 118 mm (4.646 in) |
All 56×118 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ 0055D005BNHCV page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists 0055 D 005 BN HC V (HYDAC) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 01275452 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 012 - 75/452 (HYDAC) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ 70520111 page in verification queue | UFI | partial | MANN-FILTER's online catalog lists 70520111 (MAHLE INDUSTRIEFILTER) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D0055A10NHV page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists D 0055 A10 NHV (FAI FILTRI) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ D44B05GV page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists D44B05GV (WIX) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ DHD55G05V page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists DHD55G05V (FILTREC) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ EY1180H page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists EY1180H (HENGST) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ FH2593 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists FH-2593 (FILDA FILTER) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ H1645DN2006FPM page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists H 1645 DN 2006 FPM (MAHLE INDUSTRIEFILTER) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ HF29079 | Fleetguard | partial | MANN-FILTER's online catalog lists HF29079 (FLEETGUARD/CUMMINS FILTRATION) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ HF29079 | Fleetguard | partial | Fleetguard's online catalog lists HD6121 as an interchange for HF29079. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HY13460V page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HY 13460-V (SCHUPP / SF FILTER) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ HY13612V page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists HY 13612-V (SCHUPP / SF FILTER) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ PT23575-MPG | Baldwin Filters | partial | MANN-FILTER's online catalog lists PT23575-MPG (BALDWIN) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
| ↔ SE-015-G-05-V | STAUFF | partial | MANN-FILTER's online catalog lists SE-015G05V (STAUFF) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH75160V page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SH 75160 V (HIFI-FILTER (JURA FILTRATION)) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH75205 page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SH 75205 (HIFI-FILTER (JURA FILTRATION)) as a comparison number for HD6121. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting. |
|
↔ SH75205V page in verification queue | Aftermarket | partial | MANN-FILTER's online catalog lists SH 75205 V (HIFI-FILTER (JURA FILTRATION)) as a comparison number for HD6121. 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 HD612/1 model number is decoded
- HD612/1MANN-FILTER hydraulic cartridge element part number.
- 118 mmElement height (H).
- 56 mmOuter diameter (A).
- 26 mmInner diameter (B).
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 HD612/1 filter element?
The published envelope is 56 mm OD × 118 mm length with a 26 mm inside diameter (2.205 × 4.646 in × 1.024 in ID). Confirm against the housing drawing before ordering.
What replaces the HD612/1 filter element?
18 partial match(es) requiring parameter review
How do I read the HD612/1 part number?
See the designation decoder above: each segment of HD6121 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 4 catalog element(s) share the 56×118 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.