Running hot on your 3rd Gen Cummins Ram? A failing or leaking radiator is a serious issue on high-output diesel trucks. This direct-fit replacement radiator features a durable aluminum core with plastic tanks — OEM-spec construction that restores proper cooling capacity and keeps your 5.9L or 6.7L Cummins running at the right temperature.SKU: VR2711 | OEM Reference: 55056816AAFits: 2003–2009 Dodge Ram 2500 & 3500 with 5.9L Cummins Diesel 2007–2009 Dodge Ram 2500 & 3500 with 6.7L Cummins Diesel Construction: Aluminum core with plastic tanks Core Height: 29 1/4" Core Width: 27" Core Thickness: 1 5/8" Inlet Hose Size: 2" | Outlet Hose Size: 2" Why replace it? Engine running hotter than normal or overheating Coolant leak from radiator tanks or core Low coolant with no obvious external leak Visible corrosion, cracks, or damage to the radiator Coolant contamination (milky appearance) Direct plug-and-play fit. No modifications required. Fast shipping from Ram Parts USA.