No the outer seal on the differential itself. When i put the CV in the first time i had it angled to much and and punched a dent into the seal and tore it. Then i went on a journey to find the seal which no one in Idaho carries. I was fortunate enough to pay the 21.00 for a new seal from the dealership.
When i went to reinstall the seal i had put it in backwards. Put the axle in, truck back together, drove it around the block and no leaks. Once i got on the freeway that SOB let loose and there was diff fluid everywhere. Back to step one.......remove, reinspect, realize, then install it the right way.
Round 2 FIGHT!!!Put it back together and this time i lowered the jack and angled it down so Fluid would leak out if it were going to. Sure enough it did....This time i realized even though i put it in the right way there are grooves inside the differential that tempt you to push it in farther than its supposed to go...Tempted i was...and leaked it did!
Round 3....Pulled the seal out until it was about 1/16 of an inch recessed into the differential and reinstalled again. Magical, no leaks on day 3 now. I think i got it right.
:vader: