Just over a year ago, there was a global pandemic that disrupted all sorts of supply chains. You might have noticed one of these effects if you tried to be buy toilet paper in the Spring of 2020. If you've driven by a new car in the last few months, you may have noticed a line of new cars parked around the perimeter with the middle of the lot being empty. Have you tried to buy a new major appliance recently? You might be waiting months unless you settle for a model you might not want. Manufacturers can't find employees because nobody wants to work - they make more on unemployment.Why can't Honda source these ATF coolers?
Honda dealers typically don't stock parts - they generally order them for next-day delivery from regional warehouses that source from the same vendor. If one dealer can't get an item, chances are another won't be able to, either. "National backorder" is the common term.
Chances are, Honda's supplier is struggling to make enough ATF coolers for the Ridgeline alone - not to mention making extra stock for replacements or accessories for the Pilot. Can't blame Honda or Honda dealers for the shortage of ATF coolers, tonneau covers, windshields, emblems, and many other parts.