Does anyone know the correct belt size? The ones I bought at Autozone have a different code on them. I know the vendor code is going to be different, but below that is a more standard code.. One was 4V650 and the other was 5V880 or something like that.. I'm assuming that's 4 ribs, and 650 millimeters and 5 ribs, 880mm or something like that... Thanks.

Clarke