These Victor Pro series water pumps are engineered for high-output racing engines, particularly late model dirt and circle track applications. These pumps include a two-piece, cartridge-style design that delivers improved performance as well as easy maintenance. The two-piece design has improved symmetrical flow paths, which means increased flow and requires less horsepower from the engine. A new, aggressive 3.45" impeller with inlet and outlet port designs that have been improved delivers maximum cooling with equal distribution, so that these water pumps are outstandingly efficient. This design aids in eliminating hot spots in the engine, drawing optimal power from each cylinder. They also have a -2 AN bleeder screw that allows quick coolant system bleeding.