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

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.

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Average mileage: 72,361 (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
65 people reported this problem
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problem details
2004 Jeep Wrangler - Manual Transmission 35,500 mi,
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
1995 Jeep Wrangler - Manual Transmission 118,000 mi,
rear end leaking at pinion. transfercase leaking all over.
2005 Jeep Wrangler - Manual Transmission 70,000 mi,
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
1994 Jeep Wrangler - Manual Transmission 122,000 mi,
Currently have a small leak in my transfer case. I got an estimate and it looks like it will cost around $500 to fix.
2006 Jeep Wrangler - Manual Transmission 68,000 mi,
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!
2006 Jeep Wrangler - Automatic Transmission 75,600 mi,
front and rear seals leak and so does camshaft seal
2003 Jeep Wrangler - Automatic Transmission 25,000 mi,
Axel seal front. Leaks both sides.
2013 Jeep Wrangler - Manual Transmission 28,000 mi,
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
2000 Jeep Wrangler - Automatic Transmission
Just got these replaced in my 2000 Sahara, almost 800 bythe end of it
1997 Jeep Wrangler - Automatic Transmission
front transfer case leaking oil
1995 Jeep Wrangler - Automatic Transmission
Rear pinion seal leak
2004 Jeep Wrangler - Manual Transmission 11,290 mi,
Started leaking from the front me and my friends did a diagnostics and we seem to have concluded that it's the transmision leaking
2014 Jeep Wrangler - Automatic Transmission 26,000 mi,
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.
2006 Jeep Wrangler - Manual Transmission 122,000 mi,
Leaking fluid out of junction of pan and case. Huge puddle underneath middle of vehicle. Taking it to the man tomorrow.
2011 Jeep Wrangler - Automatic Transmission 67,000 mi,
Small leak in transfer case
1994 Jeep Wrangler - Automatic Transmission 70,980 mi,
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!!!!
2006 Jeep Wrangler - Manual Transmission 70,000 mi,
rear diff leaks at pinion seal and front shows signs of leaking but no drip yet
2006 Jeep Wrangler - Automatic Transmission 51,000 mi,
Leaking fluid from transmission
2009 Jeep Wrangler - Automatic Transmission 89,000 mi,
I have a leak in the transfer case at the case-mating surface. Repairs not completed at this time.
2009 Jeep Wrangler - Automatic Transmission 61,000 mi,
Leak in front differential- not fixed yet