Filtrec · Filtrec elements · inline line

D121G25A filter element: specifications & equivalents

Q: What are the dimensions of the D121G25A filter element?

The published envelope is 50 mm OD × 209 mm length with a 24.5 mm inside diameter (1.969 × 8.228 in × 0.965 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does D121G25A use?

This element is rated 22 µm absolute — β22(c)≥1000. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

The D121G25A is a Filtrec inline-line hydraulic filter element, built with glassfiber media, sized 50 × 209 mm OD × length (ID 24.5 mm), rated at 22 µm absolute (β22(c)≥1000). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 50 × 209 mm

Inside diameter 24.5 mm

Filtration rating 22 µm abs.

Beta rating β 22(c)≥1000

Media glassfiber

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	glassfiber
Filtration rating	22 µm
Rating basis	absolute
Beta ratio	β22(c)≥1000
Outside diameter OD	50 mm
Inside diameter ID	24.5 mm
Length	209 mm
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	D121G25A
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	50 mm (1.969 in)
Inside diameter	24.5 mm (0.965 in)
Overall length	209 mm (8.228 in)

All 50×209 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ 11308D25BN page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps HYDAC 11308D25BN to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ 9800EAM252N2 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps PUROLATOR 9800EAM252N2 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ BN100003 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps BERGER BN100003 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ CF9802A25NA page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps FAI FILTRI CF9802A25NA to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ CHP424F25XN page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps OMT CHP424F25XN to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ F98008K25B page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps FILTER MART F98008K25B to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ H9114	Baldwin Filters	full	Filtrec's official Cross Navigator maps BALDWIN H9114 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HF7107	Fleetguard	full	Filtrec's official Cross Navigator maps FLEETGUARD HF7107 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HP0504A25ANP01	MP Filtri	full	Filtrec's official Cross Navigator maps MP FILTRI HP0504A25AN to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HP0504A25NA	MP Filtri	full	Filtrec's official Cross Navigator maps MP FILTRI HP0504A25NA to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HP0504A25NAP01	MP Filtri	full	Filtrec's official Cross Navigator maps MP FILTRI HP0504A25NAP01 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ QH9800A25B08 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps QUALITY FILTRATION QH9800A25B08 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ SP-030-E-20-B	STAUFF	full	Filtrec's official Cross Navigator maps STAUFF SP030E20B to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ 05.9800.25VG.10.E.P.8	Eaton / Internormen	partial	Filtrec's official Cross Navigator maps INTERNORMEN 05.9800.25VG.10.E.P.8 to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade. Rated micron differs (20 vs 22 µm) — verify efficiency class and collapse/seal for the housing before substituting.
↔ HC9800FCT8H	Pall	partial	Filtrec's official Cross Navigator maps PALL HC9800FCT8H to FILTREC D121G25A as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade. Rated micron differs (25 vs 22 µm) — verify efficiency class and collapse/seal for the housing before substituting.
↔ HD517/6	MANN-FILTER	partial	MANN-FILTER's online catalog lists D121G25A (FILTREC) as a comparison number for HD5176. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ HF30730	Fleetguard	partial	Fleetguard's online catalog lists D121G25A as an interchange for HF30730. Envelope cross-reference; verify micron grade, collapse rating and seal configuration before substituting.
↔ SBF-9800-8Z25B	Schroeder Industries	partial	Schroeder online cross-reference (FILTREC); 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.

Full chart: Filtrec cross reference chart →

How the D121G25A model number is decoded

G25Filtrec internal media grade code (glassfiber, 22 µm).

Typical equipment & applications

Filtrec aftermarket replacement hydraulic/lube filter element (D 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 D121G25A filter element?

The published envelope is 50 mm OD × 209 mm length with a 24.5 mm inside diameter (1.969 × 8.228 in × 0.965 in ID). Confirm against the housing drawing before ordering.

What micron rating does D121G25A use?

This element is rated 22 µm absolute — β22(c)≥1000. Always compare Beta ratings at the same test point: two brands may print different micron numbers for the same physical grade.

What replaces the D121G25A filter element?

13 catalog-confirmed full match(es) (11308D25BN, 9800EAM252N2, BN100003…); 5 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 30 catalog element(s) share the 50×209 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

D121C10A Filtrec · 10 µm D121C10AV Filtrec · 10 µm D121C25A Filtrec · 25 µm D121C25AV Filtrec · 25 µm D121G01A Filtrec · 4 µm D121G01AV Filtrec · 4 µm D121G01AV/ESD Filtrec · 4 µm D121G03A Filtrec · 5 µm D121G03AV Filtrec · 5 µm D121G03AV/ESD Filtrec · 5 µm

Other models in the Filtrec elements series

All 9874 (list page 2/20) →

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.