so here is the old (left one) vs new (right one), they look different but they are both the same size, diameter and thickness all the same. It's the one with part number: 31230-52011. Will try it out tomorrow and let you guys know. I doubt my old one was oem anyway., There's 'Nachi" written on it.
Also I just threw the old one on the fork just to check with you guys, did I put it correctly? Was too excited when I originally removed it from the car lol didn't pay attention that day.
Ps didn't try the new one on the fork because I ran out of brake cleaner and the fork is filthy looking.