Leaking axle seal 8 3/4

Hey guys, Does anyone know the part number for the axle seals I will need for the 8 3/4. I seen that there is an inner and an outer seal, should I replace both?
Thanks,
B


I dont have the part numbers, but just my two cents on replacing both seals.. My philosophy is if you have it apart to change or fix something, and you can afford it, change them both.. The way my luck works, the instant I feel one seal looks good so I dont change it in order to save a couple bucks, thats the seals that screws me over once its all back together LMAO..