Our Heavy-Duty fan drive is the best working fan drive available. The Heavy-Duty is designed to work with your factory metal blade. The Heavy-Duty begins to pull the fan in at 195-200* water temp with a clean radiator. It does a wonderful job of transforming your 6.5 into a reliable towing rig. This is the best way to go when your factory drive needs to be replaced.
Just bought your severe duty fan clutch and fan, I almost find it hard to believe the change in the cooling on my 96 plow truck its like a different motor. thanks