pulley question

[srvnt]

can i use a 5 rib pulley they sent me when i needed a 4 rib pulley for the ac tensionerfor my sr or u think it might skip around?

[zneubauer]

personally I wouldn't just because you don't want to take that risk. if you have to ask its probably wrong, unless that pulley is specifically made for your motor. I'd start the return process now and if anyone else can vouch for it working then go for it.

[amerjap]

I'd return it and see if you can find a ribbed-matched pulley online or at a salvage yard. You don't want it not staying in position.