2016 Tiffin Phaeton 44OH Belts & Tensioner

[dmctlc]

So I'm looking for someone with a similar year and model Phaeton. Reason being I've called Tiffin Parts twice now and each time get different answers so hoping someone in the know can tell me the part numbers and any cross reference numbers to the following Engine parts:
(1) AC accessory belt (Tiffin Says # 5042760 and K080435(I know this one is wrong as far as Tiffin Part numbers - see below) I repeated it and he concurred though I go into Parts under my model and I see Part Number 5027678 (cross reference Part Number is Gates K080435)
(2) Belt Tensioner is TENSIONER BELT AUTO SMOOTH C9 8RIB Part number 5000138 which I do see but wondering if someone can tell me a cross reference number since I'm sure I can get it a lot cheaper than $126 plus S&H.
Trying to finish out my List of Spare Parts I carry, just in case.
Appreciate the help and thanks

[joshjack]

You might call Freightliner directly. When I called them to get the PN for my belt Tiffin couldn’t even pull it up.

[dmctlc]

[QUOTE=joshjack;6064430]You might call Freightliner directly. When I called them to get the PN for my belt Tiffin couldn’t even pull it up.[/QUOTE

I called Cummins for the main Belt but I had to call Tiffin because I have a PowerGlide Chassis. I should've mentioned that on my original post.
Thxs