Mutoh printheads are confusing for one reason: the same physical head can carry a Mutoh part number (DG-xxxxx or DH-xxxxx), an Epson designation (DX5, DX6), and in some cases a Roland part number too. Below is the map from Mutoh printer model to the head we stock, grouped by head family. Confirm your model on the printer's ID plate before ordering.
ValueJet VJ-1604, VJ-1614, VJ-1618 — Epson DX5
The first-generation 64" ValueJets run the Epson DX5 engine. We stock it as the VJ-1604 print head assy DF-49684. It's the same DX5 architecture found in Roland and Mimaki machines of the era, which is why supply is deep and pricing is stable. Pair it with the 31-pin DX5 head data cable — replace it with every head.
ValueJet VJ-1324, VJ-1624, VJ-1638 — DG-43988
The later 54"/64" ValueJets moved to a different head, Mutoh part DG-43988. We list it per model so the compatible-printer tags are unambiguous: VJ-1324, VJ-1624, VJ-1638. All three are the same part. The cable is the VJ-1618/1624/1638 printhead cable.
ValueJet 426UF and 1626UH (UV) — Epson DX6
Mutoh's UV ValueJets share their head with the Roland VS-series: the DX6, part 6701409010. Listed as ValueJet 426UF DX6 and ValueJet 1626UH DX6. Note the UV ink variant — the head must have run UV ink, not eco-solvent, so don't substitute a solvent DX6 pulled from a Roland VS-540.
RJ-900 and RJ-900X — Epson DX5
The dye-sub RJ-900 series runs the DX5 under Mutoh part DG-44246: RJ-900 / RJ-900X printhead, $1,498. Both models use the same head; the X is a later printer revision. Details in our RJ-900 guide.
DraftStation — DF-49029
The DraftStation CAD/aqueous line uses its own assembly: DraftStation print head assy DF-49029. Aqueous only — not interchangeable with any solvent ValueJet head.
XpertJet i-series — DH-40274 / DH-40275 and DH-40990
Current XpertJet machines use Mutoh head assemblies rather than a bare Epson part. For the XpertJet 1682/1641 family with the I9472 head we stock the I9472 head assy DH-40274 / DG-49580 and the I9472 head assy with base DH-40275 — the base version saves a transfer step on install. The I47V head is DH-40990. XpertJet part numbers changed between firmware generations; send us your serial before ordering if you're unsure.
Quick reference
| Mutoh model | Head | Mutoh part |
|---|---|---|
| VJ-1604 / 1614 / 1618 | Epson DX5 | DF-49684 |
| VJ-1324 / 1624 / 1638 | Mutoh head | DG-43988 |
| VJ-426UF / 1626UH | Epson DX6 (UV) | 6701409010 |
| RJ-900 / RJ-900X | Epson DX5 | DG-44246 |
| DraftStation | Aqueous assy | DF-49029 |
| XpertJet I9472 | Mutoh assy | DH-40274 / DH-40275 |
| XpertJet I47V | Mutoh assy | DH-40990 |
Before you order
Two checks. First, ink: a DX5 that ran eco-solvent is not a safe swap into a dye-sub RJ-900, even though the part looks identical. Second, cable pin count: DX5 ValueJets use a 31-pin cable, later models differ. Our identify your printhead model post walks through reading the head label if the printer's documentation is gone. For the parts that go with the head — dampers, cap, maintenance station — see the companion post Mutoh ValueJet replacement parts.
Frequently asked questions
What printhead does the Mutoh VJ-1624 use?
The VJ-1624 uses Mutoh part DG-43988, shared with the VJ-1324 and VJ-1638. It is not the DX5 used in the earlier VJ-1604/1614/1618, and the cable is different, so confirm the model before ordering.
Is the Mutoh VJ-1604 printhead an Epson DX5?
Yes. The VJ-1604, VJ-1614 and VJ-1618 run the Epson DX5 engine under Mutoh part DF-49684, with a 31-pin data cable. It's the same head architecture used in Roland and Mimaki DX5 machines of the same era.
What head is in the Mutoh ValueJet 1626UH?
The Epson DX6, part 6701409010, in its UV configuration. It's the same part number Roland uses in the VS-series, but the ink history matters — use a UV-service head, not one that ran eco-solvent.
Can I use a Roland DX6 in a Mutoh 426UF?
The part number is the same (6701409010), but the Mutoh 426UF is a UV printer. A new sealed DX6 is fine; a used head pulled from an eco-solvent Roland is not, because the internal coatings have been exposed to a different ink chemistry.
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