Originally Posted by richard28

Since your car is a 1986, you may have the old version of the fan, I believe its blades were white. You need the fan with the black blades. I don't know if the fan clutch was also updated; Phil should be able to help you on that. I did this switch on my early production model 1988 300ce using parts from my later production 1988 300ce parts car and the overheating problem I had disappeared immediately. Hope this helps.