Hi all

I have an 1985 , 190E, 2.3 Gas Mercedes. The Crankshaft doesn't spin the pully because the rubber molding on the back of it is cracked. I have been trying to find that part for 2 weeks with no luck so far. I found a pully and a harmonic balancer for that year and model but it does not look the same as it has no rubber on the back of the pully. Does any one know if they are interchangable? Any ideas will be appreciated, thanks.