The a340h in my 87 4runner is not the original transmission. PO swapped the shot original with another that came from who knows where. The id plate is missing and so I'm trying determine an approximate date based on the features, wiring, etc.The a340h that I have does not have an oil cooler attached to transfer case, but the original a340h used on the 87 4Runners did have an oil cooler. Couple questions:

1) When did Toyota drop the oil cooler from the a340h transfer case?
2) What changes were made to the a340h through the 90's?

 

bump ...
If you have an A340H installed or lying around and know what year it is, does it have this transfer oil cooler?

Transfer Oil Cooler ...

 

 

my 1995 4runner has it as well.

 

Thanks for the info. So far it looks like the transfer oil cooler was available from 87 to 95, suggesting the one I have installed might be 96 or newer, or the transfer case may have been swapped out at one time.
4Runners never fail to keep things interesting.