Cummins Replacement belt

[Ronbstewart]

1994 Monaco Executive, Cummins 8.3C, 300, I would like to purchase a spare serpentine belt, but haven't been to determine the correct part number or size I'm told there are 2 different belts. Engine has 3 belts, 1 1/2 wide cog belt that drives the Hyd pump, V belt that drives AC compressor and serpentine belt that drives whats left. Has any one replaced this? Looks like a simple job, just need belt with correct length and channels/ribs.

[EngineerMike]

Its easy to measure the belt and get one on line.
1) remove belt
2) stretch it out flat (one half pressed against other, w/slight loop at each end)
3) measure length of the double thickness
4) double result from #3 and add ~3/4" for the loops
5) measure width & count # of ribs
6) google, and/or Ryder Fleet Products, and/or... Once you find one brand's part# you can find alternative brands using the part# match function at mfgr's websites (Gates, Goodyear, Dayco, etc.).
You don't need the Cummins part, any brand will do. Cummins will be at least 50% higher, maybe double internet pricing.

[mahon1993]

If you have the engine owners manual that came with the MH I think Cummins specs the belts in there.
Greg

[Perry White]

Check the numbers on the belt, unless they are wore off. I bought Dayco which is the Cummins supplier for about a third of Cummins cost. Might have to get a mirror to see all around belt.

[Ronbstewart]

Thanks for all the helpful replies, when I got home I checked the stack of stuff previous owner threw in and low and behold there's a brand new one in it (Gates- 8 rib, #K080610) found quite a few on line from $66 at part suppliers down to $31 on ebay.