When our coach was only a few months old in 2007 the main surge tank hose blew through a crack just below the tank. The hose looked old, and Monaco in Coburg surmised it was a used one from an older coach. Many guesses as to why either the dealer or factory replaced the original with that. Monaco ordered up another one, I believe from an outside vendor in the area that made it up. Some hose mounting was questionable and the techs routed it differently so the hose wouldn’t rub anywhere; rubbing was not the blowout cause though. It was just an old and poor quality hose from another rig.
As I look at the service receipt for that event I probably can’t help you much, and it’s only one hose, albeit one of the longest. I can only say it was Monaco part #33109 and 1.25 inch EPDM. The tech also asked for better quality material than what was removed. The “quantity “ listed is 7, which I assume is the footage. I’d guess little of that is useful since the part number is from defunct Monaco and was custom made anyway. But it backs up what Bryan said.
It’s possible that the Parts dept. of Beaver Coach Service/Sales in Bend could provide info, Robert, or try the Monaco division of REV Group, 1-800-509-3417; though not the original Monaco company, REV has been helpful to some regarding models built before their era.
Joel