ZDMak Diesel Fuel Injection Pump Socket Tool for Mercedes 32 Point Serrated Socket Tool 32 Point for MB Repair Female Socket with 1/2 inch drive. Same as Benz ref tool # 617-589-0109-00 Mercedes diesel engines 601, 602, 603, 605, 606, 617, 1982 and up Great for the Professional or Shade-Tree Technician