Some items from this specific schematic: Valve Assy,ex-ai, Tube,aicv A, Tube,aicv B, Clip,tank Hose.
The lowest price component in this Air Injection Control Valve parts-list fiche is the Clip,tank Hose.
The Air Injection Control Valve assembly is constructed from several parts from which the Valve Assy,ex-ai is the most expensive.