The Bulb(12v18w) is the most widely applied product in the GSXR600X 2004 (K4) USA (E03) TURN SIGNAL LAMP ( two times ).
The twenty Gsxr600x 2004 (k4) Usa (e03) Turn Signal Lamp component parts are all listed in this schematic.
Of all the components that make up this Turn Signal Lamp the Screw has the lowest price.
