Does anyone know if the M104 serpentine belt-pulley bearing (104.200.20.28) is replaceable ?

I just called the dealer and what was once a $149 part is now over $227 !

Also, if the bearing is replaceable, do you have to R&R the whole bearing bracket or can you just replace the bearing while the bracket is still mounted on the engine ?

Thanks in advance,

:-) neil
1988 E36T AMG (AMG M104)
1993 500E