On this parts fiche the Bolt,sprocket Fitting is the most specified component.
The Camshaft/tensioner is made up of components including this Camshaft-comp,intake which is the most expensive.
A sample from the products for the Camshaft/tensioner include: Bolt,flanged,8x35, Bolt-flanged-small, Guide-chain,upp, Camshaft-comp,intake.