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Old 04-16-2019, 02:21 PM
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coolant hose

Hi
I've got a problem with my 91 YJ 4L.
I would like to swap the hose on the house thermostat, near the temperatur sensor.
I ask to jeep parts shops, here in france, but they 've said we can't order it anymore.
Do you know the hose part number and where i should buy it in USA
thanks

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Old 04-16-2019, 02:30 PM   #2
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Not available through Mopar anymore, but here is a good aftermarket option.

Continental Elite 63272 Molded Heater Hose

https://www.amazon.com/dp/B000C30MJ4..._v4ITCbBPJCE1H
https://www.rockauto.com/en/parts/co...se+/+pipe,6892

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Old 04-16-2019, 07:19 PM   #3
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It is just s heater hose, you can buy by the foot

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Old 04-16-2019, 07:44 PM   #4
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Quote:
Originally Posted by Rubisean1 View Post
It is just s heater hose, you can buy by the foot

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No it's not the ends are different sizes, you could probably stretch it but it will fail prematurely.
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Old 04-16-2019, 09:53 PM   #5
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^ And... If you are replacing both heater hoses, they are different sizes
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Old 04-16-2019, 10:16 PM   #6
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They are just different lengths ?

I only have my 4 cyl hoses to go by, but I’m assuming the neck on the thermostat takes the same diameter as the pump tube, and it was just the lengths that differentiated the OEM part numbers.

Edit:
Seems there is a difference, I’m not sure what it is though

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Old 04-16-2019, 11:23 PM   #7
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Quote:
Originally Posted by IRQ View Post
They are just different lengths ?

I only have my 4 cyl hoses to go by, but I’m assuming the neck on the thermostat takes the same diameter as the pump tube, and it was just the lengths that differentiated the OEM part numbers.

Edit:
Seems there is a difference, I’m not sure what it is though

The thermostat housing and water pump inlet tubes are the same size on the 4 and 6 cyl but the hoses are longer on the 4.0.

Both hoses are flared out on the end so neither one can use bulk hose. The thermostat housing end is flared at the thermostat housing end. And the water pump side is flared at the firewall. They are impossible to get switched around because of this and probbaly why Jeep made them like this, idiot proof.
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Old 04-16-2019, 11:25 PM   #8
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Quote:
Originally Posted by agalloch07 View Post
The thermostat housing and water pump inlet tubes are the same size on the 4 and 6 cyl but the hoses are longer on the 4.0.

Both hoses are flared out on the end so neither one can use bulk hose. The thermostat housing end is flared at the thermostat housing end. And the water pump side is flared at the firewall. They are impossible to get switched around because of this and probbaly why Jeep made them like this, idiot proof.
I’m just questioning the part number I gave initially, which is cut to fit.

On the 2.5 the hose fits both, but only fits one on the 4.0
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Old 04-16-2019, 11:34 PM   #9
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Quote:
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I’m just questioning the part number I gave initially, which is cut to fit.

On my YJ the hose fits both, but only fits one on the 4.0

It's been a while since i have owned a 2.5. I know that the water pump hose could be made to cut to fit because your cutting off the non flared end.

The thermostat housing side i dont think could be cut. Because if you cut the end off that goes into the thermostat housing your cutting off the flared portion. And if you cut it off the other side your going to be cutting off the performed section with a s curve in it.
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Old 04-16-2019, 11:34 PM
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Hello everyone
Thank you for your answers. I went to Rockauto to order the hose. I must receive it in a few days. I had already been told about this website but I had never made an order.
thanks again
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Old 04-16-2019, 11:43 PM   #11
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Quote:
Originally Posted by agalloch07 View Post
It's been a while since i have owned a 2.5. I know that the water pump hose could be made to cut to fit because your cutting off the non flared end.

The thermostat housing side i dont think could be cut. Because if you cut the end off that goes into the thermostat housing your cutting off the flared portion. And if you cut it off the other side your going to be cutting off the performed section with a s curve in it.
I have the hose (63272) in my garage as a spare, Ill have to mock fit it just to see.

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