I pulled an oil cooler from a 1st Gen Odyssey with plans to use it on my 94 F22B1. It gets it's water from a fitting just to the right and top of the oil filter mount. I looked at a number of F series blocks, F22 and F23, and it seems that not all of these blocks have that fitting, or rather a casting in the block where the fitting installs. Were there different castings for different models of motor?

 

5dr Wagon, and Ody had the oil cooler.
Since the Fseries Ody and Wagon were no longer in the US after '97/98 you will only find the oil cooler fittings on 90-97 Accord Wagons, and 1st gen Odys.

Go to majestic honda and look up the parts.