Epson 664 EcoTank Ink Bottles – 664 Cyan, Magenta, Yellow, 774 Black & 4-Pack

Castle Ink sells compatible Epson 664 EcoTank ink bottles: 70 ml cyan (T664220-S), magenta (T664320-S) and yellow (T664420-S), each rated at about 6,500 pages, plus the 140 ml Epson 774 pigment black bottle (T774120-S, about 6,000 pages) and a 4-pack of 774 black with the three 664 colors. The 664 colors fit the Epson EcoTank ET-2500, ET-2550, ET-2600, ET-2650, ET-3600, ET-4500, ET-4550 and ET-16500; the 774 black fits the ET-3600, ET-4550 and ET-16500 (the ET-2500–ET-2650 and ET-4500 use 664 black instead). Each bottle is newly manufactured and filled with ink matched to the original. Orders placed by 4 PM ET ship the same business day, shipping is free over $50, and every bottle is covered by our 1-year 100% satisfaction guarantee.

Bottle note: these are EcoTank ink bottles, not cartridges. They fit only the EcoTank models listed above, which have refillable ink tanks and do not read a chip on the bottle.

Shopping for a specific printer? Find the right ink or toner by printer model →

  • Replacement Ink Bottle Combo Pack for Epson 774 140ml Black / Epson 644 70ml 3 Color Pack
    $38.99
    $29.99
  • Replacement Ink Bottle for Epson 664 Yellow T664420-S
    $11.69
    $8.99
  • Replacement Ink Bottle for Epson 664 Magenta T664320-S
    $11.69
    $8.99
  • Replacement Ink Bottle for Epson 664 Cyan T664220-S
    $11.69
    $8.99
  • Replacement Ink Bottle for Epson 774 Black T774120-S
    $12.99
    $9.99

Epson 664 / 774 EcoTank Ink: Common Questions

What is the difference between Epson 664 and 774 black?

Epson 664 black is a 70 ml dye-based bottle used by the ET-2500, ET-2550, ET-2600, ET-2650 and ET-4500. Epson 774 is a 140 ml pigment black used by the ET-3600, ET-4550 and ET-16500, rated at about 6,000 pages. The 664 colors (about 6,500 pages each) are the same for all of these printers.

Which printers use Epson 664 ink bottles?

Epson EcoTank ET-2500, ET-2550, ET-2600, ET-2650, ET-3600, ET-4500, ET-4550 and ET-16500. Our Find Ink by Printer page has a guide for each model.

Will compatible Epson 664 ink work in my EcoTank?

Yes. EcoTank printers do not read a chip on the bottle, so the ink pours into the tank like the original. The keyed nozzle only fits the matching color port. After filling, confirm or reset the ink level on the control panel if the printer asks. If a bottle from us gives you trouble, contact us and we'll replace or refund it under our 1-year guarantee.

Single bottles or the 4-pack?

The 4-pack (774 black plus 664 cyan, magenta and yellow) works out to about $7.50 per bottle and is the right set for the ET-3600, ET-4550 and ET-16500. Owners of the ET-2500–ET-2650 and ET-4500 should buy the 664 colors individually, since those printers take 664 black rather than 774.

More help: All Epson ink cartridges · Find Ink by Printer. Updated October 2026 by William Elward, founder of Castle Ink (in business since 2005).