ZDMak Bosch in-Line Diesel Pump Timing Pin for Mercedes 601 589 0521 00 Locking Nut tool for Mercedes repair Same as Benz Ref: 601-589-0521-00 OM601, OM602, OM603, OM605, OM606, OM617. We have a wide variety of repair tools for Mercedes Be sure to read more details below (in the Product Desciption).