Most wrong filter orders on this machine start with a catalogue, not with the machine. Two documents both claim the DX225LCA and both are right about the machine and wrong about each other: the parts book that came with the excavator, and the aftermarket reference table a distributor keeps behind the counter. They agree on the engine oil and disagree on the hydraulic pair. The serial number settles it.
1. The eleven positions on a DX225LCA
The Doosan parts book handles filters as a packaged set. Fig. 5110, headed SPARE PARTS, is dated 12 September 2012, fourth edition, and applies from serial 5001. It is short, and it is the closest thing to a factory answer on which element goes where — it does not sell you a filter you do not need, and it does not fill the page with options.
| Position | Parts book, Fig. 5110 | Aftermarket table, later build | Note |
|---|---|---|---|
| Engine oil | 65.05510-5028A | 65.05510-5028A | Cartridge inside housing 65.05501-7084A |
| Fuel | 65.12503-5016B | 400403-00126 | The two documents differ — see section 5 |
| Pre-fuel | not listed | 400508-00062 | Water separator ahead of the main filter |
| Hydraulic return | 474-00055 | 400504-00277 | 150 × 110 × 450 mm either way |
| Hydraulic suction | not listed | 400408-00049 | Strainer in the tank, not an element |
| Hydraulic pilot | 2471-1154 | 400504-00241 | Different size — see section 3 |
| Air breather | K1029257 | 400504-00254 | Tank breather, changed with the return element |
| Air cleaner, outer | 474-00040 | 400401-00091 | Inside air cleaner assembly 204-00067 |
| Air cleaner, inner | 474-00039 | 400401-00090 | Safety element behind the outer |
| Aircon, outer | not listed | 471-00119 | Cabin filter, often forgotten in service kits |
| Aircon, inner | not listed | 400402-00038 | Cabin filter pair |
Read the third column as "what a later machine takes", not as a correction of the second. A filter order that mixes the two columns is the one that comes back. The positions above keep the reference book's own column order — engine oil, fuel, pre-fuel, hydraulic return, suction, breather, pilot, aircon outer, aircon inner, air inner, air outer — because that order is how the table is printed, and reading it in a different order is how a breather gets ordered as a pilot filter.
2. One return size, two Doosan numbers
474-00055 and 400504-00277 are published at the same size by every listing we read for this page: 150 mm outside, 110 mm inside, 450 mm high. Hifi's catalogue sheet for 400504-00277 gives 5.91 in outside, 4.33 in inside and 17.72 in high, which rounds to the same three figures. Whatever changed at the serial break, it was not the pocket in the tank.
That matters because the numbers cross in the aftermarket. One China catalogue lists K9005928 as the number equivalent to Baldwin PT8366, Donaldson P763257 and Doosan 474-00055 — and an aftermarket reference table puts K9005928 in the return column for the DX225LCA. So the same element answers to a Doosan number, a house number and a filter-maker number, and any of the three will fit a machine that takes the other.
Weight is where these lists stop agreeing. The element is quoted at 2.33 kg on one reseller page and 2.41 kg on another, and at 2,536 g on a manufacturer's sheet. That spread is packing and scale, not steel: order by diameter and height, not by shipping weight.
3. The pilot element is where the break bites
The pilot circuit is the small filter most fleets change last and regret first — it protects the pilot pump and the joystick spools, and when it plugs, the machine does not stop, it gets vague. On this model it is also the one position where the two numbers are not interchangeable:
| Number | Outside | Inside | Height | Published cross-reference |
|---|---|---|---|---|
| 2471-1154 | 42.5–43 mm | 21.5 mm | 87–90 mm | Baldwin PT8392, Donaldson P550576, Fleetguard HF28836, Hengst EY982H D530, Wix 57100, Sakura H-2719 |
| 400504-00241 | 44 mm | 22.5 mm | 85 mm | Donaldson P502667, Hifi/SF SH60695, HY90836 |
1.5 mm on the outside diameter is enough to stop an element seating, and 2 to 5 mm of height changes whether the housing cap closes on the gasket. So the pilot filter is not a "close enough" item: if the housing you have takes 2471-1154, a 400504-00241 will not go in it, and the reverse is just as true. Note also that Wix is quoted as 57100 on one listing and 59128 on another for 2471-1154 — two different elements under one OEM number, which is exactly why the diameter and height are worth measuring before a bulk order.
4. The cross-reference, as published
Use this table to compare a quote, not to replace the machine check. Each row is what aftermarket catalogues print against the OEM number, read on 24 October 2026:
| OEM number | Position | Size | Cross-references in circulation |
|---|---|---|---|
| 474-00055 / 400504-00277 | Return | 150 × 110 × 450 mm | Baldwin PT8366, Donaldson P763257, Fleetguard HF28978 / HF35357, Wix 51397, Sakura H85570, Hifi SH 60137 |
| 2471-1154 | Pilot | 43 × 21.5 × 87–90 mm | Baldwin PT8392, Donaldson P550576, Fleetguard HF28836, Hengst EY982H D530, Wix 57100 / 59128 |
| 400504-00241 | Pilot, later build | 44 × 22.5 × 85 mm | Donaldson P502667, Hifi/SF SH60695, SF Schupp HY90836, 7275347, 7004879 |
| 65.05510-5028A | Engine oil | 93 mm OD, 170 mm high, thread 1-16 UN-2B | Fleetguard LF3934, Mann W 950/41 |
| 65.12503-5016B | Fuel element | Element inside housing 65.12501-7023B | No cross-reference we can confirm — quote on the OEM number |
| 474-00040 / 474-00039 | Air outer / inner | Air cleaner 204-00067 | Quote on the OEM number |
| K1029257 | Air breather | Tank breather | Later builds list 400504-00254 |
5. Where the documents disagree, and how we quote
Fuel. The parts book prints 65.12503-5016B as the element inside the 65.12501-7023B housing. The aftermarket reference table prints 400403-00126 for the same model. Both numbers exist in Doosan's catalogue; they are not the same element and they do not sit in the same housing. We do not average them and we do not guess which one your machine left the factory with — a photograph of the housing, or the number stamped on the old element, answers it in one message.
Air cleaner. The parts book lists 474-00039 inner and 474-00040 outer; the later-build table lists 400401-00090 and 400401-00091 for the LCA and keeps the 474 numbers for the plain DX225LC. Same machine badge, two element pairs — and an air element is cheap enough that people order without checking, then find the lid will not seat.
Return element. This is the one place the two documents agree in substance: K9005928 in the reference table is the aftermarket equivalent of 474-00055, and both describe a 150 × 110 × 450 element. If a supplier offers 400504-00277 for a serial-5001 machine, the element will still fit — but the number on the invoice will not match the book, so we write both on the packing list.
6. What to send with the enquiry
- The serial plate. Not the model — the serial. The hydraulic pair on this machine turns on it, and a photograph of the plate costs nothing.
- The old element, photographed against a rule. Diameter first, then height. It resolves any doubt about pilot and return in one look.
- The housing, photographed from the top. On the fuel side this is the only reliable way to choose between 65.12503-5016B and 400403-00126.
- Quantity per position, not per machine. Return elements go in as one or two depending on the tank, and a machine in a dusty yard usually wants the breather in the same box.
- Whether the fleet is mixed. If the same purchase order covers a DX225LC and a DX225LCA, list them as separate lines — the two rows in the reference table are not the same set.
We supply these as aftermarket elements cross-referenced to Doosan numbers, quoted FOB Shanghai or CIF. Nothing here is a genuine Doosan part, and Doosan and Develon are trademarks of their owners, used to describe fitment only. For the general method behind this kind of matching, see how to read a filter cross-reference, the pilot, case-drain and return positions explained, and the checks that separate a copy from a usable element.
FAQ
Q: What filter numbers does a Doosan DX225LCA take?
A: From the machine's parts book, Fig. 5110: return 474-00055, pilot 2471-1154, engine oil 65.05510-5028A, fuel element 65.12503-5016B, air outer 474-00040 with inner 474-00039, breather K1029257. Later builds carry 400504-00277 and 400504-00241 in the two hydraulic positions instead.
Q: Is 474-00055 the same as 400504-00277?
A: By catalogue size, yes — 150 mm outside, 110 mm inside, 450 mm high on both. They are two Doosan numbers for one element, split by build, and Hifi publishes SH 60137 against 400504-00277 while the same size is cross-listed for 474-00055 to Baldwin PT8366 and Donaldson P763257.
Q: Can I use a 2471-1154 where 400504-00241 is listed?
A: No. 2471-1154 is about 43 × 21.5 × 87–90 mm; 400504-00241 is 44 × 22.5 × 85 mm. The difference is small on paper and decisive in the housing.
Q: Why does the parts book list a fuel filter the aftermarket table does not?
A: The book is the fourth edition, September 2012, covering S/N 5001 and up, and prints 65.12503-5016B as the element in housing 65.12501-7023B. The aftermarket table prints 400403-00126 for later production. We quote against the housing number you read off the machine rather than choose between the documents.
Sources
Part numbers, figure numbers and serial range from the Doosan DX225LCA parts book, fourth edition dated 12 September 2012, Fig. 5110 (spare parts set), Fig. 009 (oil filter), Fig. 017 (fuel filter) and Fig. 1170 (air cleaner), read 24 October 2026. The eleven-position matrix and the later-build numbers come from a Doosan aftermarket sales reference book covering the DX225LC and DX225LCA rows, read the same day. Dimensions, weights and cross-references come from filter catalogues and reseller listings for 474-00055, 400504-00277, 2471-1154, 400504-00241 and 65.05510-5028A; where those listings disagree, both figures are printed instead of one being chosen. No prices and no service intervals are quoted here, because neither the parts book nor the catalogues we read publish them.