Maybe this post will help prevent another Monaco coach owner from the headaches I've been going through over the last 3 months. As you can see in my signature, we have a 2008 HR Vacationer XL diesel pusher with the 340HP 6.7L Cummins engine that we have owned since September 2013. Even though our coach only has about 20,000 miles, we experienced an engine coolant hose failure last Fall during a 3000 mile trip. We got it fixed at a truck stop and I called Monaco Parts to try to order a new set of hoses when we were back at home. They gave me the Monaco part numbers but told me the hoses were backordered. Since we had another trip planned to Disney World last November, we made that trip with the old hoses and I waited until after the holidays to start looking for more hoses.
When I called Monaco Parts in 2015, they told me that they no longer handled the hoses for my coach. They sent me pictures of the pipes used in the coolant system on my coach which also showed the rubber hoses and it told me the inside diameter of the hoses is 2.25". They could not give me a Gates or similar cross reference number.
To make a long story short, I got my MH back today from a local diesel mechanic shop after it was there for 3 weeks. Getting new hoses from the pictures was unsuccessful and luckily some numbers were salvaged from the old labels still on the original hoses. My coach has three sections of straight hose and three 90 degree bend hoses. One 90 degree hose attached to the thermostat housing and the other two bend hoses were originally an "S" shaped hose that was cut in half and are found near the bottom of the rear radiator and attach to what I think is the transmission cooler. According to the mechanic shop, the numbers below are all part numbers from O'Reilly Auto Parts and I believe they are Gates numbers. All my new hoses are silicone except for the one that attaches to the thermostat housing which was the hardest hose to find. Here are the numbers:
- Straight Hose (3", 7", & 8" lengths; silicone) - #24836
- 90 degree bends (2, silicone) - #28211
- 90 degree bend by Thermostat housing (rubber) - #21944
Like I said earlier, I hope this information helps someone else. If nothing else, just be aware that it is not a quick process to get new engine coolant hoses.