Eaton / Internormen · 01.E / 01.N / Easy-Fit · return line
V4051V6C03 filter element: specifications & equivalents
The V4051V6C03 is a Eaton / Internormen return-line hydraulic filter element, built with c-pak media, sized 99.06 × 457.2 mm OD × length. Verify against the current manufacturer data sheet before ordering.
Specs come from Eaton's product data hub via its site-search API. The µm retention rating follows ISO 16889 (absolute convention), while the model-code fineness grade is nominal — match both before substituting.
Specification table
| Parameter | Value |
|---|---|
| Filter type | return line |
| Media | C-Pak |
| Outside diameter OD | 99.06 mm |
| Length | 457.2 mm |
| End caps | open-ended cartridge element |
| Collapse / burst pressure | 10 bar |
| Integral bypass valve | none (housing/valve-dependent) |
| Seal material | Fluorocarbon (Viton) |
| Manufacturer part no. | 229AS10025A |
| Source catalog | Eaton: Eaton product data hub via site search API (eaton.com) |
| Last verified | 2026-09-28 |
Sources: Eaton — Eaton product data hub via site search API (eaton.com) — accessed 2026-09-29.
Eaton / Internormen® and all model designations are trademarks of their respective owners, used here for identification only — ElementRef is an independent reference site, not an authorized Eaton / Internormen distributor.
Dimensions & series range
| Outside diameter | 99.06 mm (3.900 in) |
| Overall length | 457.2 mm (18.000 in) |
All 99×457 mm interchange elements →
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
|
↔ BEK1803AV page in verification queue | Aftermarket | partial | Eaton's filtration cross-reference lists BEK/18-03AV (Behringer) as an interchange for V4051V6C03. Envelope cross-reference; verify micron grade, delta-P rating and seal configuration before substituting. |
|
↔ HC9700FKP18Z page in verification queue | Pall | partial | Eaton's filtration cross-reference lists HC9700FKP18Z (Pall) as an interchange for V4051V6C03. Envelope cross-reference; verify micron grade, delta-P rating and seal configuration before substituting. |
| ↔ KKZ3V | Schroeder Industries | partial | Schroeder online cross-reference (VICKERS); envelope match — verify grade and seals. |
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 V4051V6C03 model number is decoded
- V4051V6C03Eaton V405 Vickers filter element model code (Eaton V405 Vickers Return-Line Filter Element).
- 229AS10025AEaton catalog number (order code) for the same element.
- C03Filter fineness grade: nominal rating and media letter.
- C-PakFilter media execution.
- 10 barDelta-P resistance class — maximum differential pressure (collapse) rating.
- Fluorocarbon (Viton)Seal compound.
- 99.06 mmOuter diameter.
- 457.2 mmElement height.
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 (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 V4051V6C03 filter element?
What replaces the V4051V6C03 filter element?
How do I read the V4051V6C03 part number?
Is a same-envelope aftermarket element always a drop-in replacement?
How often should a hydraulic return-line element be replaced?
Same-envelope elements from other brands
View full interchange →These 2 catalog element(s) share the 99×457 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.
Other models in the 01.E / 01.N / Easy-Fit series
All 3329 →Reviewed & verified by the ElementRef engineering desk against Eaton on 2026-09-28. Read our editorial & correction policy.