Originally Posted by Billy B
.... If anyone knows the part number for the hoses I need I would be very thankful. PLEASE HELP ME.
Welcome to the Forum!
You have come against a very common problem -
It seems that sometimes the "parts houses" claim that they have no parts at all for a P-3X chassis -
Your chassis serial number will identify the chassis as a P-30, P-32, or a P-37.
From other threads about replacing radiators here on the Forums it sometimes seems that Airstream installed their own unique radiator on the chassis. Several horror stories about searches for replacement radiators can be found by utilizing the "Search" function in the "blue" area of the pull-down legend towards the top of the page.
It's best to have the old part in hand when you go the the parts store in order to compare it to what the parts store has on the rack - sometimes it's a "go with the best fit".
I wish you luck with your search - please keep us posted on how you come out on quest for a replacement part.