Some items from this specific schematic: Screw, Cap,exhaust Valve, O Ring(d:1.9,id:14.5), Screw(5x10).
With a quantity of three pieces, the Bolt is the most used part in the EXHAUST VALVE (MODEL K2/K3/K4) diagram.
The Bolt(5x10) is the lowest priced item on this Exhaust Valve (model K2/k3/k4) schematic.