This a Bosch 0 460 426 093 Fuel Injection Pump. It was taken out of an engine that was disassembled for parts some time ago. Might need to be rebuilt and fittings might need to be resealed.
 
Specifications:
Manufacturer:  Bosch
Part#: 0 460 426 093
Material(s): Steel , Iron Alloy
Color(s): Gray
Electrical: N/A
Overall Dimensions: 15"x10"x8"
Mount(s): N/A
Connection(s): N/A