I've been looking up parts for a 1996 Jeep Grand Cherokee 5.2L and they are asking if it's a 318 5211CC or a 318 5218CC. How can I tell which one I have?

 

What are you looking for? I have no idea what that means.

 

Searching I've found that those numbers 5211 and 5208 (not 5218?) are a reference to the engine emission system. Supposedly the number can be found on the emissions sticker under the hood.

 

I heard that too but to no avail...

 

Well shoot. Maybe try this:
https://www.cherokeeforum.com/vindecoder.php

 

Lots of good info but no answer.
Go to Ebay motors and type in a new vehicle for your "garage". 1996 Jeep Grand Cherokee it will ask you for three different engine choices. 4.0, 5.2 5211CC and 5.2 5218CC. Did they make a diesel? LOL

 

Well here it is but I still have no idea as to find out which one is mine?

 

It looks like the 97 5218 is a .100 mm overbore. It may be part of the block number. That's only about .005".