The valve adjustment screw for the Citroën 11CV is an essential engine component responsible for precisely adjusting the valve clearance. This small part ensures that the engine valves open and close in the correct manner, which is crucial for the optimal operation and efficiency of the engine. Properly adjusted valves prevent unwanted engine noise, reduce wear and ensure a smooth driving experience. Especially for classic models, it is important that this screw is of high quality to preserve the authenticity and functionality of the classic vehicle's performance.