[RACC_KL]

Welcome to the forum.
Can you provide the part number for the entire rear knuckle assembly?
I can't figure which part is the bushing.
We have had a discussion about front steering knuckle ball joints and people were getting Moog ball joints.
I went to Mopar Online Parts and can't find what you are describing.
Refer to this Web site: Select Parts Category - 2014 Jeep Cherokee | Mopar Parts
Generally when Mopar sells an entire assembly it is because repairing it is not cost effective for the Jeep repair facility.
They also don't want to provide every "piece part" separately.
Sometimes we just have to spend the big bucks and do it the FCA way.
We have some Canadians on here that speak French if that helps.
Found this Web site: Polyurethane 240sx/Skyline Rear Knuckle bushings (pair)
Maybe you can find something that works.
Here is an adventurous link:

Apparently Moog makes bushings, maybe you can find one that fits.

I found a part number if you want it. I know this thread is a year old but I have the number

 

[RACC_KL]

Rear knuckle assembly left part no is 5090073AD and the right knuckle assembly part number is 5090071AE

 

[RACC_KL]

Hmmmmm.

I compared the two from the same reseller, looking closely at pics :

2014-2023 Jeep Cherokee Rear Knuckle, Left 05090071AE | Mopar Estores

2014-2023 Jeep Cherokee Rear Knuckle, Left 05090071AE

store.mopar.com

2014-2018 Jeep Cherokee Rear Knuckle, Left 05090073AE | Mopar Estores

2014-2018 Jeep Cherokee Rear Knuckle, Left 05090073AE

store.mopar.com

Now... the casting is different. 073 seems more 'beefy'. Also, they list the 073 as compatible for 2014 to 2018, while 071 is good for 2014 to 2022... go figure...

The number may have superseded and the part changed ever so slightly