[bestgenman]

Adrian, I don,t have a part number. I found a 5” pulley with the correct bore, machined a spacer so the belt alignment would be correct, and machined a cup for the front so the nut would not run out of threads. I understand this doesn’t help you much but it was my resolution to the belt degradation problem. Even now, I can’t engage the AC until the batteries have peaked without screaming belts. I always run my generator for a while so there is power on the charger/inverter to charge the batteries if dry camping, not needed if departing from a shore power site. I’m just careful when I can apply the AC. Usually after a few short minutes, the AC can come on. Belts are changed at annual service regardless, they’re cheap. Maybe someone else has a P/N. I wasn’t going to mess around buying pullieys trying to get a direct swap and go. I’m fortunate to have a lathe so, it,s not a big deal.