I know all of the other fill and drain plugs have washers on them, but does the Rear diff fill plug have a washer on it?? I changed the Redline 75w90 out today and replaced it with the Diaqueen SAE90 in the transfer and rear diff, but noticed my rear diff fill plug didnt have a washer, and I couldnt remember if it did last time or not either. All the others did, just didnt see one on this one. Doesnt seem to be leaking or anything...I know it wouldnt be a major problem if it was missing, but that would be a different story if it was the drain plug missing it.

 

the rear diff plug have a washer, most of the time the washer is still stuck to the diff when you remove the plug. i suggest buying a washer just to be on the safe side.

 

Would anyone know the size of the washer for the rear diff plug, or have a part number for the washer or plug for the rear diff filler plug?? any help would be greatly appreciated.