Do you have the parts manual? It's on mitsubishilinks.

On PDF page number 312 (manual page 21A-92) there is a diagram of the automatic transmission. It looks like illustration part number 7 (valve assembly, solenoid) is the part you are looking for. The diagram isn't great, but it may help you get an idea of what to look for.


Mitsu # 6 - 98 6G72 Montero Sport, Locking Rear Diff, Aisin Manual Hubs, 31x10.5

Mitsu # 7 - 02 6G74 Montero Limited