having issues locating a ac hose that runs from behind compressor down under battery tray and has square box and splits to the front of radiator. it has a 4.9 inline 6. trying to find part number to cross reference fo a new hose.

 

Sometimes places that might have what you are looking for may not always go by part number. A description may suffice.
Also. there may be an A/C repair facility that could have what you need sitting on a shelf in the back room and you need to call them because they don't all have websites or sell online. You might find a place that can use your old fittings and attach new hoses, but you have to search around for them.
They are not all online.
Did you try ;
Vintage Parts Inc.
Beaver Dam, Wisc. ?

 

i have not, but will try your recommendations, thank you for your time.