The sub assemblies and components that make up this Second Air (model K9) include this Valve Assy,2nd, the most expensive part.
Parts such as the Second Air (model K9): Nut, Clip, Nut, Hose,2nd Air Cleaner are included in the Vz800z Boulevard M50 2008 (k8) Usa California (e03 E33) Second Air (model K9) parts fiche.
With four applications this Bolt is the most specified part.