what do you mean whats the vin ? parts don't have vin's just part #'s, do you want the part # for a LSD to fit a 2001 ? or the part # for the whole assemy ? don't think you can get a whole assemy, they like selling parts

2001 5sp. K&N stock filter 215/70/15
If your check engine light is on at least you know the light still works