Fitment: 2009-2010 Dodge Ram 1500 Pickup 2009-2010 Dodge Ram 2500 Pickup 2009 Dodge Ram 3500 Pickup 2009-2010 Dodge Ram 4000 2011-2023 Ram 1500 2019-2023 Ram 1500 Classic 2011-2019 Ram 2500 2011-2018 Ram 3500 2011-2020 Ram 4000 Features & Benefits: Larger working surface provides cooler running and longer life expectancy Thicker body and deep finned faceplate dissipate more heat Uses a better quality bearing than Standard Duty and Heavy Duty designs 100% performance and durability tested Enhanced fin design for maximum heat dissipation .