here I have for sale a really nice 2863215 clutch fan. I removed this from my 1965 coronet 500 8 years ago to fit a three core radiator in the car. the previous owner of the car told me it was off his 1970 challenger. I can not say if the clutch is OEM or aftermarket, but it does move as it should. not rough, and not too freely. this item is bolt on and go.