Hitachi 4448402 Hydraulic Filter Element (ZX200 / ZX210H / ZX230 / ZX270 / ZX330)

One Element, Two Hitachi Numbers

The reason this page carries two Hitachi numbers is not a supersession and not a difference in the filter. Filter-brand catalogues list 4448402 and 4443773 in the same line against one aftermarket equivalent — the entry that quotes Donaldson P502270 and Baldwin BT9557 also quotes both Hitachi numbers — and the same cartridge is held by Sany as B222100000233 and EF058, by Sunward as 730401000068 and by John Deere as FYA00033065. Hitachi's own parts catalogue keeps them separate, and the two machine lists overlap without being identical: 4443773 also appears against ZX180W, UCX300 and ZR900TS machines.

For a buyer the rule is the one our parts man uses: order the number your parts book prints, and check the dimensions on arrival. What we will not do is tell you the two numbers are formally the same part when Hitachi still lists both.

Why the By-Pass Valve Matters More Than the Price

A hydraulic filter element is asked to do two jobs: hold contamination at the rated micron size, and not collapse when the oil is cold or the media is loaded. Baldwin's published sheet for PT9557 — the element sold against both Hitachi numbers — lists a 20 PSID by-pass valve inside the element. That valve is the second job. When differential pressure across a loaded element reaches the cracking pressure, oil bypasses the media instead of crushing it, and a crushed element sends its own pleats through the circuit. On a ZX200-3 or ZX210H-3 with a common-rail engine and an electronically controlled pump, that is an expensive afternoon.

The first job is described by beta ratings, and Donaldson publishes them for P502270: beta 2 = 14 micron, beta 20 = 20 micron, beta 75 = 37 micron. Read beta 20 = 20 micron as twenty times more contamination held back than passing at 20 micron. An element with the same 156 mm diameter and 431 mm length can have different beta numbers, which is why two filters that fit the same housing are not the same filter.

Fitting Notes on the Zaxis Family

These machines are old enough that field history has mixed the numbers. A ZX200 and a ZX210H usually share this element; a ZX200-3 and later can differ by market variant (the -3G and -HCME builds are not the same list as the standard machine), and the wheeled ZX225US family carries the same cartridge as the crawler machines. The element sits in a tank-mounted filter housing, so it comes out with the oil still in the machine — have a container ready and check the seal and the flange for nicks before you refit, because a damaged flange seal passes oil around the element rather than through it and the filter looks perfect while doing nothing.

If you are ordering for a fleet rather than a single machine, tell us the model list and we will quote across it — the John Deere 270C LC and 330C LC excavators take the same element, which is worth knowing if a mixed-brand fleet is on the same site.

What We Do Not Publish

No price, because the honest variables are quantity, specification level and shipping lane. No hour interval, because Hitachi sets servicing by machine, serial range and duty cycle rather than in a public table, and a page that invents one causes real damage. And no claim that 4448402 supersedes 4443773 or the other way round, because Hitachi still lists both. Send the machine model and serial, or photographs of the old element with a tape measure across the body, and we confirm the number, the equivalents and the full service set — hydraulic, fuel and air — on one quotation.

FAQ

Q: Is Hitachi 4448402 the same filter as 4443773?
A: Filter suppliers treat them as one element: a catalogue line that quotes Donaldson P502270, Fleetguard HF7691 and Baldwin BT9557 against 4448402 quotes it against 4443773 in the same entry, and the same cartridge is listed under Sany B222100000233 / EF058, Sunward 730401000068, VMC HF502270 and John Deere FYA00033065. Hitachi's own parts catalogue carries the two numbers as separate lines, and the machine lists are similar but not identical — 4443773 also appears against ZX180W, UCX300 and ZR900TS machines. Order the number your parts book prints; the aftermarket supplies one element for both.

Q: What are the dimensions of the Hitachi 4448402 hydraulic filter?
A: Catalogue figures converge closely: outside diameter 155.6 mm (6 1/8 in) from Baldwin's published sheet for PT9557, and 156.2 mm from a supplier catalogue that also gives 431 mm length with a 98 mm bore and a 6.9 bar collapse burst. Donaldson's data for P502270 gives 431 mm length and 2.59 kg. So roughly 156 mm diameter by 431 mm overall length — a flanged cartridge, so measure the body at its widest point rather than across the flange.

Q: Which Hitachi machines use the 4448402 hydraulic filter element?
A: Catalogue fitment lists carry ZX200, ZX200-3G, ZX200-E and ZX200-X, ZX210H, ZX210K and the ZX210 -AMS / -HCME variants, the ZX225US, ZX225USR and ZX225USRK wheeled family, ZX230, ZX250H-3G and ZX250K-3G, ZX270, ZX330, ZX350H and ZX350W, ZX380HH, and the IZX200 and ZR420JC machines. It is also listed against John Deere 270C LC and 330C LC excavators. Confirm by model and serial: the -3G, -E and HCME suffixes are separate market variants with their own lists.

Q: What is the micron rating of the 4448402 element?
A: Donaldson publishes beta ratings for its P502270 equivalent: beta 2 = 14 micron, beta 20 = 20 micron and beta 75 = 37 micron, at a weight of 2.59 kg. Beta 20 = 20 micron means that at 20 micron twenty times as much contamination is held back as passes through. That number is what separates a specification-grade element from a cheap one in the same housing, and on a common-rail machine the difference is carried by the pump.