Rebuilts here seem to run about $200:

http://mbpumps.com/

I have not used them, just found them on the internet. The older gentleman on the phone seemed to know what he was talking about. The pump on my 1991 300CE is still in the whining stage. There were some threads earlier on just changing out the bearing on the pulley but my type is probably like yours with only the clutch up front.


glenmore
1991 300CE
2000 C280
1990 LS400