What Ink Does the Epson EcoTank ET-4750 Use?
Last Updated:The Epson EcoTank ET-4750 uses Epson 502 ink refill bottles (Black, Cyan, Magenta, Yellow) — no cartridges. The cartridge-free design delivers up to 2 years of ink with a single set of bottles.
Ink Bottles at a Glance
| Bottle | Color | Yield |
|---|---|---|
| T502120-S | Black | ~7,500 pages |
| T502220-S | Cyan | ~6,000 pages |
| T502320-S | Magenta | ~6,000 pages |
| T502420-S | Yellow | ~6,000 pages |
The Epson 502 bottles fit the EcoTank ET-2700, ET-2720, ET-2750, ET-2760, ET-3700, ET-3710, ET-3750, ET-3760, ET-4750 and ET-4760 — making 502 a versatile shared family across Epson EcoTanks.
Save on Epson 502 Ink
The 502 bottles give you cartridge-free convenience at very low cost per page. Shop Epson 502 ink at Castle Ink.
How to Refill the Epson EcoTank ET-4750
- Open the ink tank cover on the front-right of the printer.
- Unlock the colored cap for the empty tank.
- Hold the matching 502 bottle upright above the tank and let it auto-fill.
- Re-cap the empty bottle and close the tank cap.
- Repeat for each empty color, then close the cover. The printer will prime automatically.
Troubleshooting Tips
"Refill ink" message persists: Reset the ink levels in the printer menu after refilling.
Faded prints: Run Setup > Maintenance > Print Head Cleaning.
Bottle keys won't unlock the tank: Use only Epson 502 bottles — keyed to prevent the wrong ink color.
Air bubbles in the tube: Run a head cleaning cycle to clear lines after a refill.
Official Epson Resources
Epson ET-4750 support · Epson home
Bottom Line
The Epson EcoTank ET-4750 uses Epson 502 refill bottles (Black, Cyan, Magenta, Yellow). A single set lasts roughly 2 years — shop Epson 502 at Castle Ink.
Frequently Asked Questions
Does the ET-4750 use cartridges? No — it uses 502 refill bottles.
How long does a set last? Up to 2 years of typical home/office printing.
Can I use other Epson ink? No — only Epson 502 bottles fit this tank.
Will third-party 502 bottles work? Yes — quality compatibles work in the ET-4750.
What if the tank overflows? Wipe with a lint-free cloth and continue normally.
— William Elward