Dear all:
I have a 2000 XJ Classic 4.0L,(built for export) I need to replace the PCM. It has the P/N P56041 with large bold last 5 digits after it, 639AD.
I have seen lots of PCM's wit different last 5 digits, are they all interchangeable or I should get the P/N with the same last 5 digits. I appreciate all your comments.

 

You need one that is matching or compatible...if you enter that part number in Google, and search around, it should give a list of compatible part nums

 

I got mine from Flagship One

https://www.fs1inc.com/

 

I punched in the whole P/N, P56041639AD in google, did not get any result.
I checked that web Flagship one, they have an interchangeable P/N's list but my P/N was not there, something fishy.
I sent them a message with my P/N to see if any of them P/N's matches mine.

 

I did a search with that part number and got these results, you may want to check them out

https://www.google.com/search?sxsrf=...4dUDCAg&uact=5

Hope that works, there were links to flagship1, carcomputerexchange and others.

Good Luck!