Oxygen Sensor Mod

Ok so I have a big problem. I bought a universal Bosch 3 wire oxygen sensor but when I went down to my car to remove the bad one it was 4 wire and it was hooked to a bunch of different wires that were 1 red, 2 green, 1 orange, and 1 black. The green one and the black one were linked together. It was hooked up as follows. Black = Black/Green, Gray = Red, White = Orange, White = Green.



The oxygen sensor I pulled out is a Bosch from the look of it and it's part# is 0258003231. Can anyone tell me what kind of hookup this is?

Oxygen Sensor Mod