The Epson WorkForce ET-4550 EcoTank uses compatible ink in four colors: black T774120 (774) at about 6,000 pages, plus cyan T664220, magenta T664320 and yellow T664420 (664) at about 6,500 pages each. All are Ultra High Yield. A 4-pack, T664520-S (T664), is also available. Same-day shipping on most orders.
Reg Price $26.99
$21.99
Epson WorkForce ET-4550 EcoTank refill ink
This printer takes Ultra High Yield ink. Each compatible ink below replaces the Epson part number shown and works with the ET-4550.
Colors and page yields
- Black: T774120 (774), about 6,000 pages
- Cyan: T664220 (664), about 6,500 pages
- Magenta: T664320 (664), about 6,500 pages
- Yellow: T664420 (664), about 6,500 pages
- 4-pack: T664520-S (T664), a multi-pack of four ink
Other printers that use the same ink
The same supplies also fit the WorkForce ET-16500 EcoTank and the Expression ET-3600 EcoTank.




