Fitment: 2003-2009 Dodge Ram 2500 2003-2010 Dodge Ram 3500 2008-2010 Dodge Ram 4500 2008-2010 Dodge Ram 5500 Specification: Adoption of Excellent Raw Materials---Can effectively prevent the surface heat deformation Powerful Fan Motor---Large air volume,Fast Heat Dissipation,Safer and More Stable DIRECT FIT & HIGH EFFICIENCY---OE standard for easy installation; Engine Cooling Fan undergo rigorous testing before leaving the factory and adopts a sealed design to ensure that the coolant will not leak The Function of a Cooling Fan: .