Filtrec · Filtrec elements · inline line

WP459 filter element: specifications & equivalents

Q: What are the dimensions of the WP459 filter element?

The published envelope is 109 mm OD × 277.5 mm length with a 19 mm inside diameter (4.291 × 10.925 in × 0.748 in ID). Confirm against the housing drawing before ordering.

Q: What micron rating does WP459 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 WP459 is a Filtrec inline-line hydraulic filter element, built with cellulose media, sized 109 × 277.5 mm OD × length (ID 19 mm), rated at 25 µm class (β25(c)≥2). Verify against the current manufacturer data sheet before ordering.

Envelope OD × L 109 × 277.5 mm

Inside diameter 19 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	109 mm
Inside diameter ID	19 mm
Length	277.5 mm
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	WP459
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	109 mm (4.291 in)
Inside diameter	19 mm (0.748 in)
Overall length	277.5 mm (10.925 in)

All 109×278 mm interchange elements →

Cross references & equivalents

Equivalent model	Brand	Match level	Note
↔ K102652K page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps ARGO-HYTOS K102652K to FILTREC WP459 as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ K3102652K1 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps ARGO-HYTOS K3102652K1 to FILTREC WP459 as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ K3102652K2 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps ARGO-HYTOS K3102652K2 to FILTREC WP459 as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ K3102652K3 page in verification queue	Aftermarket	full	Filtrec's official Cross Navigator maps ARGO-HYTOS K3102652K3 to FILTREC WP459 as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade.
↔ HF35460	Fleetguard	partial	Filtrec's official Cross Navigator maps FLEETGUARD HF35460 to FILTREC WP459 as a direct replacement, publishing the FILTREC element's OD/ID/height envelope and media grade. Rated micron differs (75 vs 25 µm) — verify efficiency class and collapse/seal for the housing before substituting.
↔ PT9129	Baldwin Filters	partial	Baldwin's Form 561 Number-Finder cross-reference lists WP459 (FILTREC) as replaced by Baldwin PT9129. Form/fit listing without published performance data — 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.

Full chart: Filtrec cross reference chart →

How the WP459 model number is decoded

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

Typical equipment & applications

Filtrec aftermarket replacement hydraulic/lube filter element (WP 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 WP459 filter element?

The published envelope is 109 mm OD × 277.5 mm length with a 19 mm inside diameter (4.291 × 10.925 in × 0.748 in ID). Confirm against the housing drawing before ordering.

What micron rating does WP459 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 WP459 filter element?

4 catalog-confirmed full match(es) (K102652K, K3102652K1, K3102652K2…); 2 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 1 catalog element(s) share the 109×278 mm envelope. Envelope match alone does not guarantee interchangeability — compare micron/Beta, seals and collapse rating.

HF35460 Fleetguard · 75 µm

Other models in the Filtrec elements series

All 9874 (list page 19/20) →

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.