cnterline

Just about 2500 miles on it and bearing is making noise,thought it was my tensioner bearing so changed that and still noise ,so with it idling I CAREFULLY slowed down supercharger to a stop as it has some slight parasitic drag and noise got louder , also with this low mileage it shouldn't be making noise already has anybody else had to change out this bearing on this pulley ? And need part number thanks

Smalone01

Yeah, I had to replace mine also.
Nachi. 45BG07S5A2G-2DL

Found it on eBay for $55.00

Toadster

wow 2500 miles is pretty low for the bearing to fail...

link to my replacement - so far so good! https://mbworld.org/forums/w211-amg/...oing-well.html

it's holding up well

cnterline

Ok thanks I found a real Nachi bearing and it's on the way

rios

If you struggled on the install and the pulley didn't go on smoothly and you banged on it you may have damaged casing for sealed bearings. I had a tough time trying to install a cold pulley on a hot car even hours after I thought it had time to cool. The old pulley slipped right off but then, they were at the same temp. I resorted to put ice on the supercharger shaft until the pulley slid right on and all the way back like butter.. Could have waited overnight but I started the job at work on my breaks and had to finish it...