ARGO-HYTOS · Breather Filters · inline line

LT.1325-51 filter element: specifications & equivalents

The LT.1325-51 is a ARGO-HYTOS inline-line hydraulic filter element. Verify against the current manufacturer data sheet before ordering.

Line type inline

Partially verified. Fit and grade trace to an official interchange document; dimensional values are compiled from 0 aftermarket listing(s) and must be confirmed against the manufacturer housing drawing. Confidence score 0.88.

Air flow, connection and filter fineness are taken from the ARGO-HYTOS product portal. Verify mounting configuration against the current ARGO-HYTOS data sheet before ordering.

Specification table

Parameter	Value
Filter type	inline line
Rated flow	400 L/min
Integral bypass valve	none (housing/valve-dependent)
Manufacturer part no.	32556800
Source catalog	ARGO-HYTOS: ARGO-HYTOS product portal (portal.argo-hytos.com)
Last verified	2026-09-28

Sources: ARGO-HYTOS — ARGO-HYTOS product portal (portal.argo-hytos.com) — accessed 2026-09-28.

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

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 LT.1325-51 model number is decoded

LT.1325-51ARGO-HYTOS tank breather / filling filter part number (Ventilating Filter) per the official product portal.
400 l/minRated air flow.
G1 1/4Connection / port configuration.

Typical equipment & applications

Hydraulic reservoir ventilation
Tank filling and breather filtration

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.
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 replaces the LT.1325-51 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 LT.1325-51 part number?

See the designation decoder above: each segment of AHLT132551 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.

Other models in the Breather Filters series

All 117 →

L0.0304-01 L0.0605-00 L0.0605-01 L0.0605-58 L1.0403-01K L1.0403-51K L1.0406-01K7 L1.0406-03S L1.0406-101S L1.0406-102

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