Front and Rear Differential Pinion Seal and Transfer Case Leaks on Jeep Wrangler

Problem Description and Possible Solution

Leaks at the front and/or rear differential pinion seal and from the transfer case are common. Leakage from the transfer case normally occurs at the case-mating surfaces and require removal of the transfer case to reseal.

Problem Data
RepairPal Verified
Average mileage: 73,020 (11,290–175,000)
Drive Trains affected: 4WD, Automatic Transmission, Manual Transmission
19 model years affected: 1994, 1995, 1997, 1998, more1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013, 2014
66 people reported this problem
Viewing 1 - 20 of 34 comments
im a chrysler technician and own a wrangler myself, this is the bigget problem on the wrangelers up to 2006 the front and rear pinion seals leak. these cars are industructible though nothing can stop the 4.0liter inline 6
Currently have a small leak in my transfer case. I got an estimate and it looks like it will cost around $500 to fix.
rear end leaking at pinion. transfercase leaking all over.
Differential service, front and rear. Gaskets replaced, pinion seals leaking. I had the problem at roughly 70,000 miles and same issue at 100,000 miles
Took my Jeep in for it's 30k mile check up and they found the seals leaking. The technicians even researched all kinds of warranty/recall data since they said they would not expect to see this problem so soon
I was inspecting the under side of my jeep the other day and noticed it was leaking. I took it to the dealer and they said it wasn't covered by the warranty. So I'm in the process of having it fixed now!
front and rear seals leak and so does camshaft seal
Axel seal front. Leaks both sides.
Rear pinion seal leak
transfer case is always wet, leaking. haven't fixed it. Now front right wheel inside is dripping something and the car won't move.
Just got these replaced in my 2000 Sahara, almost 800 bythe end of it
front transfer case leaking oil
Started leaking from the front me and my friends did a diagnostics and we seem to have concluded that it's the transmision leaking
Leak found during an oil change - nothing suspicious happening to cause any notice. Front differential was leaking, and Jeep replaced the pinion seal. Thankfully it was under warranty.
Leaking fluid out of junction of pan and case. Huge puddle underneath middle of vehicle. Taking it to the man tomorrow.
Small leak in transfer case
I drove my jeep to vacations, to Puerto Vallarta Mx and at the way back I just notice my jeep was in trouble to shift gears and I take a look under the chasi and I notice all wet on transmission fluid,it was a bad seal on the transmission whit only 70989 miles what a joke haaaa!!!! Peace of shit!!!and I took to my dealer spectin some good will in my expenses to get repair after I spend 1200 dollars on a extended 7 years or 70000 miles and they kicked me out so I recommend to not spend your money buying a Chrysler don't buy a Lime!!!!
rear diff leaks at pinion seal and front shows signs of leaking but no drip yet
Leaking fluid from transmission
I have a leak in the transfer case at the case-mating surface. Repairs not completed at this time.