A sample from the products for the Throttle Body (vzr1800 L1 E33) include: Clip, Adjuster, Seal, Pipe Assy,delivery.
In this schematic the "Screw" is used most often.
The most reasonably priced component used on the Vzr1800z Boulevard M109r 2011 (l1) Usa Calif Canad (e03 E33 E28) Throttle Body (vzr1800 L1 E33) is the Clip.