WorkForce ET-16500
The WorkForce ET-16500 is a wide-format EcoTank whose ink is a split system: black is the 774 bottle (T774120, 140 mL pigment, up to 6,000 pages); cyan, magenta and yellow are 664 bottles (up to 6,500 pages each). The products below are that exact combination — and none of them is a 502 bottle, whatever the model number suggests.
| Bottle | Type | Color | Approx. Yield |
|---|---|---|---|
| Epson T774120 (compatible) | Pigment ink bottle, 140 mL | Black | 6,000 pages |
| Epson T664220 (compatible) | Ink bottle, 70 mL | Cyan | 6,500 pages |
| Epson T664320 (compatible) | Ink bottle, 70 mL | Magenta | 6,500 pages |
| Epson T664420 (compatible) | Ink bottle, 70 mL | Yellow | 6,500 pages |
ET-16500 Ink: Not 502, Not All-664 — It Is 774 + 664 This model collects more wrong-ink listings than any other in the range, so here is Epson's own record: the ET-16500's box holds 1 × 774 Black (140 mL) and one bottle each of 664 Cyan, Magenta, Yellow (70 mL); its Ink Finder lists T774120-S and the three 664 colour codes — and not T664120-S. Its black yield is the 774's 6,000 pages; colours rate 6,500 each.
Two clarifications that prevent the classic mistakes. First, the ET-16500 has nothing to do with the 502 family — the similar-looking ET-15000 is the 502 model; this one never takes a 502 bottle. Second, there is no 664 black for this printer: sellers listing the all-664 set here are contradicting Epson's Works With lists. (The "Business Edition" is the same printer in a different sales bundle — same ink, one category.)
The four correct bottles are below, each with our lifetime warranty and 1-year free returns.