Parking sensor difference

[Eclipsus]

Hello all,

I have faced a small problem. Got to change front diagonal parking sensors for my c207 e350 coupe, and i been told that diagonals are different from once that faces forward. I got part number for front ones: A21254200189999. Maybe someone could tell me what's the difference and knows what's its part number? Thanks in advance.

 

[Scooby_Doo]

If you google MB parking sensors, some have just the centre sensor but others come with the outer surround. If you look at your sensors ,the side outer surround is angled to fit the curve of the bumper. I don't know if genuine MB ones have the outer surround fitted or if the outer surrounds are detatchable.