So I recently found out my rear differential is leaking on my 80 wagon its leaking at the part that connects to the drive line. I think I found the right part on Rockauto but wanted to double check that that I am looking at the right seal.

Is the seal that goes to the drive line called the differential seal sorry if its a dumb question haha. Thanks

 

http://www.rockauto.com/catalog/raframecatalog.php

looks like the 1173 part number is correct and here's a great thread with exactly what you need:

 

http://www.ultimatesubaru.org/forum/showthread.php?t=60503

 

they mention that nut setting the pre-load, the only other way i can think of is to mark the location of the nut (chisel or marker) and then count the number of turns to remove it - like when doing tie rods, but you'll need to keep track of the very first turn(s) since it's going to be hard to loosen.

 

the rock auto link does not direct me to the part. best bet is to just get the part number from rock auto and do a google search on the part number/brand. that's how i verify it and found that usmb link.

 

you are *wise* to check, rockauto's listings are the worst on the internet, period. but they make up for it in price. you'll drill down for a 6 cylinder subaru and it's still listing 4 cylinder parts, that drives me nuts.

Thanks for the reply and link ill order the correct seal and get this project underway soon.