I have a 1989 Jeep Cherokee Pioneer and want to upgrade the cooling system (radiator/transmission cooler). The original owner replaced it before me and put in an open system radiator and added a transmission cooler. I would like to do the same by putting in a new open system radiator and transmission cooler. However, I want to ensure they both fit properly in my 1989 Jeep Cherokee because I understand the original parts were a closed system and it had no transmission cooler. Any information regarding what year(s) to search in order to have the best fit etc. is greatly appreciated. Thank you.

WELCOME to CF.

Check post #6 specifically:
https://www.cherokeeforum.com/f2/hel...-89-xj-239419/

This should help to:
https://www.cherokeeforum.com/f2/hose-kits-221251/

Napa has a radiator for 91 and later XJs that is for open system and has the bung for the cooling fan switch. about $120.

Since you're new here and have a Renix Jeep, go to www.cruiser54.com and do Tips 1,3,4, and 5 first chance you get. Easy, and saves headaches and $ down the road.

Great info. As Cruiser54 knows, I changed my ‘89 cooling system to open, using the original radiator. I’ll put in one of the above mentioned radiators when the time comes to replace it. I think I’d prefer the filler cap in the radiator rather than in the upper hose.

Napa NR2802

Thank you all. Great info. Much appreciated!