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Old 10-22-2018, 03:35 PM
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Join Date: Apr 2012
Location: Columbia, SC
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Aftermarket Thermostat Housings?

2014 Rubicon-X Unlimited, bought it new, about 67K miles on it now (probably less than 200 off-road miles...yep, I'm one of those) and just installed my third thermostat housing as the two previous ones cracked. The first replacement the dealership did at ~42K miles, but now I am out of warranty...

1) Just my bad luck, or have others experienced a thermostat housing crack after relatively few miles?

2) Is there any type of aftermarket upgrade for this thing? I have looked online at the bigger shops and while there are a couple brands other than Mopar, they all appear to be the same plastic housing. Given the cost of the correct anti-freeze, the cost of the parts, and the time, I would be willing to pay more for a decent replacement rather than one some accuarial calculated was "good enough" for production.


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Old 10-22-2018, 03:43 PM   #2
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Old 10-23-2018, 12:42 AM   #3
Join Date: Jul 2018
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Wow I just replaced my housing on my 2012 with 69k miles. It wasn't even leaking, replaced it just because.

I did notice it had a newer revision than the one I took off. Maybe just getting the latest model will do the trick.
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Old 10-23-2018, 07:53 AM
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Join Date: Apr 2012
Location: Columbia, SC
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Good to know. Guess I just had some bad luck with it. Hopefully this one holds up better.

Oh, and just an interesting story... I bought the replacement at the dealership. Couldn't get the bleeder screw/valve to work. Called the parts guy who said it definitely sounded defective and to bring it back. I did. Casting was slightly deformed and prevented the bleeder from working. He pulled another from the shelf - SAME EXACT DEFECT. Grabbed a third, looked fine...installed and running. I do not have the experience the vast majority of you guys have, so I never would have suspected a new Mopar part from a dealership would be defective, but it obviously makes sense that it happens from time to time.
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Old 10-23-2018, 12:46 PM   #5
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Join Date: Feb 2018
Location: Denver, CO
Posts: 68
Same exact issue. You'd think that somebody could come up with an aluminum version to prevent any sort of cracking. So far so good with the replacement I put on but time will tell i guess
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