The OEM 2003-2005 Dodge Ram 1500 2500 Climate Control Unit (P/N: 55056321AD) is a genuine part made by Dodge, designed specifically for the Dodge Ram 1500 model. This heater AC climate temperature control unit features a black plastic construction, a screw-on mounting style, and is a left-hand drive part. It is a specific fitment for the years 2003, 2004, and 2005, and is manufactured in the United States. With its OE/OEM part number being P55056321AD, this climate control unit is a reliable replacement for your vehicle's heating and cooling system. Good condition. 30 day warranty. Free shipping to lower 48. Allow 2 business days to ship.