Check out any of the twenty-two Throttle Body (vzr1800z L1 E28) components enlisted.
Some items from this specific schematic: Injector Assy, Sensor Assy, Cover, Clip.
The Screw is the most widely applied product in the VZR1800Z BOULEVARD M109R 2011 (L1) USA CALIF CANAD (E03 E33 E28) THROTTLE BODY (VZR1800Z L1 E28) ( four times ).