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MP Filtri · HP / CU / HPX Elements · return line

CU9503M25ANP01 filter element: specifications & equivalents

The CU9503M25ANP01 is a MP Filtri return-line hydraulic filter element, built with wire mesh media, sized 152 × 978 mm OD × length (ID 105 mm), rated at 25 µm class. Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 152 × 978 mm
Inside diameter 105 mm
Filtration rating 25 µm nom.
Media Wire mesh
Collapse / burst 20 bar
Line type return
Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-09-28. Confidence score 0.90.

Part number structure and orderable options are taken from the MP Filtri Hydraulic Filtration Catalogue (CAT_HF_EN p.402). Element dimensions are approximate — sourced from MANN-FILTER / STAUFF / Fleetguard interchange equivalents, not from MP Filtri directly. Verify against the current MP Filtri data sheet before ordering.

Specification table

ParameterValue
Filter type return line
Media Wire mesh
Filtration rating 25 µm
Rating basis nominal
Outside diameter OD 152 mm
Inside diameter ID 105 mm
Length 978 mm
End caps open-ended cartridge element
Collapse / burst pressure 20 bar
Integral bypass valve none (housing/valve-dependent)
Seal material Nitrile (Buna-N)
Source catalog MP Filtri: MP Filtri Hydraulic Filtration Catalogue
Last verified2026-09-28

Sources: MP Filtri — MP Filtri Hydraulic Filtration Catalogue — accessed 2026-09-29.

MP Filtri® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized MP Filtri distributor.

Dimensions & series range

Outside diameter152 mm (5.984 in)
Inside diameter105 mm (4.134 in)
Overall length978 mm (38.504 in)

All 152×978 mm interchange elements →

Cross references & equivalents

No catalog-verified cross references yet. This model is in the manual verification queue — request a verified equivalent.

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 CU9503M25ANP01 model number is decoded

  • CU950MP Filtri element series and size code for the matched return-line housing family.
  • 3Element length code within the series.
  • M25Filter media: Wire mesh, 25 µm (nominal rating).
  • ASeals: NBR (nitrile).
  • NElement differential-pressure (collapse) rating: 20 bar standard execution.
  • P01MP Filtri standard catalogue item execution.

Typical equipment & applications

  • Tank-mounted return-line hydraulic filters
  • Hydraulic power units and lubrication systems
  • Construction and agricultural machinery
  • Machine tool and industrial hydraulic systems

Selection pitfalls — read before you substitute

  • A return-line element is not a pressure-line element: return cartridges (BN4HC low-collapse) tolerate roughly 20 bar differential, while BH4HC pressure executions are rated to 210 bar. Installing a low-collapse element in a pressure housing can rupture the media on cold-start spikes.
  • This element has no integral bypass — opening pressure is set by the housing’s reusable bypass valve. Confirm the valve setting (commonly 3.4 bar) is present before fitting.
  • “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 CU9503M25ANP01 filter element?
The published envelope is 152 mm OD × 978 mm length with a 105 mm inside diameter (5.984 × 38.504 in × 4.134 in ID). Confirm against the housing drawing before ordering.
What micron rating does CU9503M25ANP01 use?
This element is rated 25 µm (nominal class). Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.
What replaces the CU9503M25ANP01 filter element?
Cross references are being verified for this model — use the inquiry form and the engineering desk will confirm equivalents.
How do I read the CU9503M25ANP01 part number?
See the designation decoder above: each segment of CU9503M25ANP01 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 28 catalog element(s) share the 152×978 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

1.03.39 R 03 BN4 HYDAC · 3 µm 1.03.39 R 06 BN4 HYDAC · 6 µm 1.03.39 R 12 BN4 HYDAC · 12 µm HD15355 MANN-FILTER CU9503A03ANP01 MP Filtri · 3 µm CU9503A06ANP01 MP Filtri · 6 µm CU9503A10ANP01 MP Filtri · 10 µm CU9503A16ANP01 MP Filtri · 16 µm CU9503A25ANP01 MP Filtri · 25 µm CU9503M60ANP01 MP Filtri · 60 µm

Other models in the HP / CU / HPX Elements series

All 435 →
CU1101A03ANP01 3 µm CU1101A06ANP01 6 µm CU1101A10ANP01 10 µm CU1101A16ANP01 16 µm CU1101A25ANP01 25 µm CU1101M25ANP01 25 µm CU1101M60ANP01 60 µm CU1101M90ANP01 90 µm CU1101P10ANP01 10 µm CU1101P25ANP01 25 µm

Reviewed & verified by the ElementRef engineering desk against MP Filtri on 2026-09-28. Read our editorial & correction policy.