The most reasonably priced component used on the Gsxr750x 2004 (k4) Usa (e03) Water Pump is the Screw 6x16.
The Gsxr750x 2004 (k4) Usa (e03) Water Pump consists of twelve pieces with the Pump Assy,water being the most expensive.
With two applications this Screw 6x16 is the most specified part.