Filtrec · Filtrec elements · inline line

R122C25B filter element: specifications & equivalents

Q: What are the dimensions of the R122C25B filter element?

The published envelope is 70 mm OD × 127 mm length with a 29.5 mm inside diameter (2.756 × 5.000 in × 1.161 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does R122C25B use?

This element is rated 25 µm (nominal class) — β25(c)≥2. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The R122C25B is a Filtrec inline-line hydraulic filter element, built with cellulose media, sized 70 × 127 mm OD × length (ID 29.5 mm), rated at 25 µm class (β25(c)≥2). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 70 × 127 mm

Inside diameter 29.5 mm

Filtration rating 25 µm nom.

Beta rating β 25(c)≥2

Media cellulose

Line type inline

Catalog verified. Parameters extracted from the manufacturer’s electronic catalog / official interchange document and checked 2026-10-03. Confidence score 0.90.

Dimensions and media grade are taken from Filtrec’s official Cross Navigator, which maps this element to specific competitor part numbers. Filtrec does not publish collapse pressure or seal compound in this API for every code — verify collapse rating, seal execution and bypass setting against the current Filtrec data sheet for the target housing before ordering.

Specification table

Parameter	Value
Filter type	inline line
Media	cellulose
Filtration rating	25 µm
Rating basis	nominal
Beta ratio	β25(c)≥2
Outside diameter OD	70 mm
Inside diameter ID	29.5 mm
Length	127 mm
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	R122C25B
Source catalog	Filtrec S.p.A.: Filtrec Cross Navigator
Last verified	2026-10-03

Sources: Filtrec S.p.A. — Filtrec Cross Navigator — accessed 2026-10-03.

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

Dimensional drawing

Reference drawing generated from the source values cited on this page — nominal envelope, schematic section, not a manufacturer drawing. The PDF is A3 landscape and vector; the PNG is sized for a WhatsApp preview. Confirm thread, end caps, seal compound and micron/Beta grade against the original element before ordering.

Dimensions & series range

Outside diameter	70 mm (2.756 in)
Inside diameter	29.5 mm (1.161 in)
Overall length	127 mm (5.000 in)

All 70×127 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 852376MIC25 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps FILTRATION GROUP 852376MIC25 to FILTREC R122C25B as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ CR112C25R page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps OMT CR112C25R to FILTREC R122C25B as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HF7904	Fleetguard	full	Filtrec's official Cross Navigator maps FLEETGUARD HF7904 to FILTREC R122C25B as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ PT9167	Baldwin Filters	full	Filtrec's official Cross Navigator maps BALDWIN PT9167 to FILTREC R122C25B as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HD7024X	MANN-FILTER	partial	MANN-FILTER's online catalog lists R122 C25B (FILTREC) as a comparison number for HD7024X. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF35205	Fleetguard	partial	Fleetguard's online catalog lists R122C25B as an interchange for HF35205. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ P171534	Donaldson	partial	Filtrec's official Cross Navigator maps DONALDSON P171534 to FILTREC R122C25B as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade. Rated micron differs (27 vs 25 µm) — verify efficiency class and collapse/seal for the housing 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.

Full chart: Filtrec cross reference chart →

How the R122C25B model number is decoded

C25Filtrec internal media grade code (cellulose, 25 µm).

Typical equipment & applications

Filtrec aftermarket replacement hydraulic/lube filter element (R family), form-fit-function cross-referenced in Filtrec's official Cross Navigator.

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.

Frequently asked questions

What are the dimensions of the R122C25B filter element?

The published envelope is 70 mm OD × 127 mm length with a 29.5 mm inside diameter (2.756 × 5.000 in × 1.161 in ID). Confirm against the housing drawing before ordering.

What micron rating does R122C25B use?

This element is rated 25 µm (nominal class) — β25(c)≥2. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the R122C25B filter element?

4 catalog-confirmed full match(es) (852376MIC25, CR112C25R, HF7904…); 3 partial match(es) requiring parameter review

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.

Same-envelope elements from other brands

View full interchange →

These 23 catalog element(s) share the 70×127 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

R122C10B Filtrec · 10 µm R122C10BR Filtrec · 10 µm R122C10BV Filtrec · 10 µm R122C10C Filtrec · 10 µm R122C25BG Filtrec · 25 µm R122C25BV Filtrec · 25 µm R122C25C Filtrec · 25 µm R122G03B Filtrec · 5 µm R122G06B Filtrec · 7 µm R122G06BV Filtrec · 7 µm

Other models in the Filtrec elements series

All 9874 (list page 9/20) →

A105C05 96×60 mm · 5 µm A105C10 96×60 mm · 10 µm A105C25 96×60 mm · 25 µm A105G03 96×60 mm · 5 µm A105G06 96×60 mm · 7 µm A105G10 96×60 mm · 12 µm A105G25 96×60 mm · 22 µm A105T125 96×60 mm · 125 µm A105T250 96×60 mm · 250 µm A105T60 96×60 mm · 60 µm

Reviewed & verified by the ElementRef engineering desk against Filtrec S.p.A. on 2026-10-03. Read our editorial & correction policy.