Yes the superchargers last a long time. At least the M62 does. But the front electromagnetic clutch does wear out with Hi-mi.,and there is a bearing inside the pulley that goes bad often! When it's going bad it makes the blower sound like a lawn mower. One would swear that the blower was bad, it is ONLY the bearing. I have change several now on various blowers. The seller "spinningwheels-sc" on Ebay or
www.spinningwheels-sc.com In Floria 352-732-5013 He sells on Ebay for $35.+$4 to ship. & I keep a spare handy. All the other sellers try to get about $80. for it.