here is a gently used Delpi upgrade $499 with that same part number you gave, i see why its not a repair but a complete replace! lol..loooks complex with allot of sleeves and conduits.
Mercedes Benz 94 95 C220 2.2L W202 - DELPHI 2002 - updated Engine Wiring Harness | eBay
new on ebay and other sites $749
they aslo talk about a separate transmission harness $98-$110
and some fuel sending unit harness
are these needed too?; good pics