I ran these numbers, and i can't come up with them meaning much of anything. don't see an actual PN. I vaguely remember someone saying "ford truck" when i grabbed it out of the pile. it appears to be this dayco hose, that i then cut to fit. 71281
Belt didnt have a pn. I measured 36 inches. But I have a small lower pulley. That would be my starting point. Hope this helps