I need to replace my speedometer. Does anyone know what the newest year that I can use is? Do all W124 speedometers work? My car is an 1989. I am going to buy a used instrument cluster from a salvage yard and I'm thinking that the newer the year I can find the better my chances are that I will find lower mileage speedo.

Here is a nice one:

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1989 300CE Astralsilber/Schwarz
1992 300CE Schwarz/Schwarz