H2 Specialty Parts designed a custom made cover for LS truck water pumps. The covers are available in clear or black anodized. When adding an electric fan to your truck, you are left with the threaded portion of the water pump pulley where the mechanical fan attached. My custom made covers simply screw onto the water pump for a finished look. It fits truck water pumps from 1999-2013. Also fits 2500 Heavy Duty Trucks from 2014-2019.