Eastern Industries water pumps are engineered from original equipment samples and specifications. Given that the water pump in the 5.9L was the same from 1989-2006, you can be sure Eastern has a cost friendly OE replacement available. As a benefit, in many instances the bearing and seals are upgraded which will guarantee that you are installing a water pump that meets or exceeds the high-quality standards of the original unit. This pump also features a shielded impeller, for additional protection and reliability.