Was the old unit leaking? They're known for having a wobbly driver side shaft, but not for bearing failure.
New Front Differential Issue
Long story short ... 2008 Titan 4x4 w/o modifications that I've owned since new. Front differential bearing (drivers side) went out at just under 77000. Ordered a new front diff from Courtesy Parts in Texas. In shipping by UPS diff was flipped upside down, drained of all fluid and appears cracked. Sent pictures to the dealer and UPS ... dealer says they don't believe it's cracked but an issue with the casting of the housing. I say it was either damaged in shipment or Nissan OEM replacement parts are very poor quality. Anyone else replaced their diff and seen anything like this??
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I see them, and would send it back!Apparently I'm not doing something right ... I attached images and can see them but others can't.
I'll bet it was just the shaft support bearing. It's just a cheap little needle bearing that's easy to replace.Differential bearing was making a grinding noise and has lots of play, up, down in and out ... bearing is definitely bad. Mag plug had metal shavings.
Check out my thread "Opened my 2007 front diff today".
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