Fuser for Tektronix printer

I have an unopened fuser for a Tektronix Phaser 550 color printer at work. Does anyone know if these things go bad over time, even if unopened? If not, I’ll eBay it since we’re getting rid of the printer.

the fuser really doesn’t have a shelf life… the lamp is what charges up the fuser to heat the ink… so i’d say no… ebay it and say as - is…

Thanks. I’ll throw it up on eBay!