[Outcast74]

Hey guys. New here. I'm looking at 2012 unlimited. Lifted with 35's super clean. It had the head replaced about 800 miles ago. I am new to the jeep world but this thing is sweet. It's got 29k miles on it. Is the head issue anything to worry about? What kind of mileage can I expect? Thanks

 

[Outcast74]

This is it.

 

[Espo774]

There are thousands of wranglers out there, why roll the dice on one that has had major engine work done in the first 30k miles? Go for a CPO one with some warranty left. Good luck!

 

[HRPinDC]

If the head was replaced by the dealer, you're probably fine. This was a common issue on the earlier 3.6 and seems to be adequately fixed. Check the gear ratio, with 35s it may seem sluggish if it has 3.21 or even 3.73s. I would pull up the carpets and look for any evidence of a bad leak. Check the underside for evidence of extreme off road use or abuse.

Mileage will depend on the gears.

Do a search for how to find out the engine hours and compare the hours to the miles to get some insight into how the Jeep was used.

Good luck!

 

[spinlock]

Chrysler provided an extended 10yr/150K mile warranty on most Pentastars with the head problem. Check that this JK has it and that it is transferable.

Also, check the gear ratio because it's about 2 grand with labor to swap gears.