Our full range of Zebra parts are all Original Equipment Manufacturer (OEM) ie they are the genuine item. There are replica or knock-off parts available at a lower cost but our experience is that they are not as good. Lower quality parts lead to poor operation (compromising the quality of print) or even failure, and can result in a shorter life span for the printer. Our advice would be not to be attracted by the lower cost, it does not outweigh the potential issues.
Zebra have written an article which gives more detail on this topic.
Download the August 2015 article here.