DEF INJECTOR - MOPAR ('13-'24 2500/3500/4500/5500)

bought 2017 3500 Nov of 2024 with 94K miles.. PO had to replace DEF injector after code pops up some 5 months earlier getting one off parts geek. I started showing a little bit white crystals on the outside which was strange. I had gotten one of the "new old stock" for $99... in late nov 24, I got the popup message about DEF and check to see more fo the white stuff on outside and the unit would not ohm out.. I changed it out went on a short drive and message went away.. I immediately order another spare that has not been not been needed going on 16 months.. glad now I got the spare as the new old stock is gone. Morel of story OEM is best 95% of the time. thanks