I think I need a new pulley, is the wear on the supercharger shaft of any concern?

 

Tough to tell on the shaft, maybe buy some cheap dial calipers and get some measurements off it and contact @Bob@BruteSpeed

 

Not a procharger guy but it sure looks like the pulley took the worst of it . Pulley is aluminum? Shaft is steel I'm sure . As stated already get a measurement on the shaft and either look up a spec or call the manufacturer or a dealer , good luck

 

What rib belt is the pulley, I might have one-

 

I'd also make checking the torque on that bolt part of your regular oil change procedure, maybe a dab of low strength loc-tite too.

 

I definitely used loctite, but I think my application method was subpar