The component with the lowest price in the CAMSHAFT/VALVE schematic is the Circlip,17mm.
With thirty-two applications this Cotter,valve is the most specified part.
Some items from this specific schematic: Shim,tappet (1.70, Shim,tappet (2.77, Shim,tappet (2.12, Shim,tappet (2.75.