This is the print head assembly for the Ultimaker 3 and Ultimaker 3 Extended. It includes all pictured parts here, including the printhead cable, fans, and nozzle seal.
If you're looking for spare nozzle seals for this printhead, they are available here.
Video instructions for installing the printhead are available here.
Shipping this week direct from the manufacturer; expected back in stock in Memphis week of 10/28.