The most reasonably priced component used on the Tt225 1987 (h) Usa Canada Valve is the O-ring (1j7).
With a quantity of four pieces, the Cotter, Valve is the most used part in the VALVE diagram.
Parts such as the Valve: Valve, Intake, Shaft, Rocker, Spring, Valve Inner, Arm, Valve Rocker are included in the Tt225 1987 (h) Usa Canada Valve parts fiche.