That's the dipstick which is what "indicator" means. He wants the tube the dipstick goes into which is p/n 52104244AB. He also needs the o-ring for the base of the tube which is p/n 52118629AB. I checked a couple Mopar sites but didn't find the tube.
About all you can do is try that p/n for the tube on places like
http://www.daveysjeeps.com/, eBay, etc. and look in places like Craiglist.