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: 73,717 (25,600–150,000)
Drive Trains affected: 4WD, Automatic Transmission, Manual Transmission
17 model years affected: 1994, 1995, 1998, 1999, more2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2014
58 people reported this problem
27 people shared problem details
2004 Jeep Wrangler- Manual Transmission35,500
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 Transmission118,000
rear end leaking at pinion. transfercase leaking all over.
2006 Jeep Wrangler- Manual Transmission68,000
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!
1994 Jeep Wrangler- Manual Transmission122,000
Currently have a small leak in my transfer case. I got an estimate and it looks like it will cost around $500 to fix.
2005 Jeep Wrangler- Manual Transmission70,000
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
2006 Jeep Wrangler- Automatic Transmission75,600
front and rear seals leak and so does camshaft seal
2014 Jeep Wrangler- Automatic Transmission26,000
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 Transmission122,000
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 Transmission67,000
Small leak in transfer case
1994 Jeep Wrangler- Automatic Transmission70,980
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 Transmission70,000
rear diff leaks at pinion seal and front shows signs of leaking but no drip yet
2006 Jeep Wrangler- Automatic Transmission51,000
Leaking fluid from transmission
2009 Jeep Wrangler- Automatic Transmission89,000
I have a leak in the transfer case at the case-mating surface. Repairs not completed at this time.
2009 Jeep Wrangler- Automatic Transmission61,000
Leak in front differential- not fixed yet
2006 Jeep Wrangler- Manual Transmission87,000
Bad leak/compression loss around front passenger tire area
1999 Jeep Wrangler- Manual Transmission45,500
diagnosed at a dealership, not fixed
2002 Jeep Wrangler- Automatic Transmission105,000
leak in transfer case.
2005 Jeep Wrangler- Automatic Transmission49,670
Both front and rear differentials were leaking and it cost $160 for each ($320) to repair at Scottsdale dealership.
2009 Jeep Wrangler- Manual Transmission60,000
Front and Rear Differential Pinion Seal and Transfer Case are leaking. Dealer will not fix.
Told this is the normal with jeeps. Need to take in and have flushed and sealed
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