Stewart EMP High Performance Water Pump - 4.6L 2V & 3V - '96-'01 & '05-'07 Stewart EMP, the supplier of cooling components to NASCAR & Ford Racing among others, has released a 4.6L Modular Engine line of High Flow, High Quality cartridge style water pumps. They feature a quality proprietary cast aluminum body, Billet Stainless Steel Impeller, Extreme Duty Low Friction Bearings & a Long Life Carbon Seal. These feature's offer you excellent longevity, reduced parasitic losses & more consistant cooling. Perfect for use with Steeda's Underdrive Pulleys. Excellent Longevity Reduced Parasitic Losses More Consistant Cooling