Bearing # is 3514525, and I had no problem getting it from Polaris, might as well get the speedo key at the same time, #3280017. Make sure you did not damage the chain case bearing---gets pretty expensive if that goes.
Same thing happened to me last year---had that clunk for over a month. The clutch side drive shaft bearing went out. I got lucky and found one used that was in good shape----new chain case bearings, seals, driveshaft bearings, jackshaft bearings, and speedo drive in off season. This year...
I want to find a 12 v source to run my gps, but I cannot find a wiring diagram for my sled. The dealer has not been much help---he thought the spare plug near the ignition switch was voltage, but not. I was told to use the fuel pump circut, but no wiring diagram. Anyone out there done this?