This part is the white cable that runs from the heated bed to the main electronics board on the Ultimaker 3 series printers and is responsible for heating the bed.
Official Ultimaker spare part, compatible with the following machines:
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, nozzle seal, collets, and clamp clips. If you're looking for spare nozzle seals for this...