Reach Cooling REA41-1553A - Radiator For Dodge Ram 2500 3500 5.9 L6 Diesel 2 Row Lifetime Waranty Premium Quality item. Direct, Drop in fit for easy installation. Built to vehicle specific application design. OEM Style Aluminum Radiator Core with Plastic Tanks. Each one quality inspected and 100% leak tested. Manufactured with the highest quality materials for long lasting service life.