Hi. Does anyone know what size of tranny cooler is recommended for a 99 Honda Odyssey LX if the original factory/radiator ATF cooler is disconnected and we go with only an external after market cooler to handle the day to day driving and the occasional 3500 lbs of towing?

Do I need to be concerned with how many passes the tube makes? Are just the dimensions relevant like... for example 3/4 x 5 x 12 1/2 core with 4 pass or should I be looking at the overall dimensions of the tube that passes through the core.

Any help is appreciated. Goal is to safely tow 3500 lbs. Thank you.

Edward

 

Aftermarket coolers will have a GVWR sizing table on the box. So if your van is ~3500lbs then a cooler for that weight will be listed under a part number. If you are going to have an additional load or towing load, that has to be added to the GVWR rating. Usually the sticker on the door/doorjamb will have the listed weights/towing capacities total for your van. Use that to appropriately size a cooler.

FWIW, a stacked plate style has better thermal capacity/rejection/cooling than a cheaper tube and fin for a given physical size.