the part no. is 71364623. It is a special nitrided aluminum fan. Someone with Deutz engine connections MIGHT CHECK OUT n4153494 or 2235856 - don't take this as gospel as they are just in my notes. These are non-nitrided units. It is approx a 4 hour job first time. If one has done it before might cut that by an hour. IF everything goes as it is supposed to.