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Old 06-13-2016, 07:25 PM
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A little help on wk2 heater core hoses

VEHICLE: 2012 WK2 Jeep Grand Cherokee 5.7L Hemi
In researching changing out all of the radiator/coolant hoses on my WK2 I discovered a concern that I was not planning on. There is an "assembly" at the firewall which is basically a combination of hoses and aluminum tubes. No sweat so far, but on further investigation, apparently there are rubber hoses INSIDE the cabin on the other side of the firewall as part of this assembly. If I change everything out under the hood I would still have these 2 original hoses inside the cabin. It doesn't make sense that they would have an aluminum piece that goes through the firewall and then revert back to rubber hoses again on the other side. Why not keep it as a aluminum tube all the way to the heater core? The part # is Mopar #5503032AJ. Does anyone know what this part looks like on the inside of the firewall? Is it rubber hoses or does it remain aluminum?

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