GeTu 940 940XL C4900A C4901A Printhead Compatible for HP Officejet Pro 8000 8500 8500A 8500A Plus 8500A Printer. 2Pack(BK/Y+C/M)

Initially only Replaced the blue/cyan ( the blk/yellow I had was OEM and still fairly new), all color prints came out horrible - too much cyan. Installed new driver, then it went downhill from there. Installed the blk\yellow printhead, began getting out of ink messages, printer continued to clean printhead after every attempt to print, Alignment failed every time, replaced ink cartridges with a reputable compatible that which had previously worked fine, now printer won’t go back online at all. Tried everything possible - unplug, reset, reinstall printer etc etc - but my printer will not go back online. Could be the new driver. Still, the fact remains that the color as way off and the printer started having issues before I did that. Do not recommend.

My Printer would not recognize the Black/Yellow Printhead. Didn't bother with the Cyan/Magenta Printhead. Returned.

These worked good for about a month, then the black printhead ceased working. Can't return beacuse it is out of the warrenty window. Shame beacuse they werw working ok till then

The blue does not work. I tried to go a cheaper route and it didn't work.

Ordered first printhead and it didn't work, seller asked to send a replacement instead of refund and I let them. Replacement didn't work either, then I just got a notice they were charging me for both. Bad product, buy HP

These printheads were never recognized by my HP 8500A Plus printer. I just threw them away and ordered the official HP printheads, which worked fine.