Water Pump - Dodge Ram Gen III Hemi Truck/SUV

The Water Pump – Dodge Ram Gen III Hemi Truck/SUV (MELLING MWP-509) is a direct-fit replacement for the factory cooling system on third-generation Hemi-powered trucks and sport utility vehicles. This mechanical water pump is engineered for owners who demand OEM-equivalent reliability without the dealership price tag, making it an essential service component for any Gen III Hemi build or rebuild project. Whether you're performing routine maintenance or completing a long-block refresh, this pump restores proper coolant circulation to keep cylinder head temperatures stable under sustained load.

Constructed from cast aluminum with a naturally finished body and black pulley, the MELLING MWP-509 features a 4.67-inch hub height that precisely matches OEM dimensions for bolt-on installation. The mechanical drive design couples directly to the serpentine belt system, relying on proven centrifugal impeller action to move coolant through the block, cylinder head, and radiator with consistent flow rates across all engine speeds. Aluminum construction provides excellent thermal conductivity and corrosion resistance, while the black pulley delivers a professional appearance and resists pulley-induced wear on belt systems.

This water pump is ideal for Dodge Ram truck owners running fourth-generation (2009–2018) or earlier-generation Hemi powerplants, as well as Durango and Jeep Grand Cherokee models equipped with Gen III Hemi engines. Installation requires only basic hand tools and takes approximately 30–45 minutes on a lift or ramp. The compact 13.1 x 9.5 x 17-inch footprint and 10.71-pound weight ensure hassle-free handling during removal and installation, and the pump ships complete and ready to install—no additional gasket kits or sealers required for the factory mounting surface.