rcenth

I can't find the part # for this part in the schematic, here are pics:

(in the yellow the drive cup / axle looking part) - its the part that goes on the side of the differential, not the one for the front/rear.





This was the original part (broken):

rcenth

Here's another pic, it's the part in yellow, pointing at it with blue arrow

kelynsdad1023

you'll have to order the whole diff in order to get that part I'm almost sure . because I have the Earthquake 3.5 which has the same set up .

rcenth

actually it looks like I found it - bs903-110 for some reason it doesn't show the part # in the backdraft 3.5 schematic but, it does show it in the backdraft 8E schematic. We already tried bs903-109 and that was just barely too long. The bs903-110 we matched it with the broken piece and they are the exact same length so it has to be it. 

nitrosportsandrunner

get some O rings from a hardware store. for that part to break, the driveshafts have to much back/forth play which wore out the drive cup. an O ring or 2 will limit the play, reducing wear on both the drive cup and driveshaft.