Genuine OEM Volkswagen camshaft, part number 06E109003M. The camshaft is responsible for the precise opening and closing of engine valves, directly influencing combustion efficiency and power delivery. This component is machined to exact factory profiles to ensure correct valve lift and duration. Genuine OEM camshafts are essential for maintaining the integrity of the valvetrain, as they are hardened to specific standards to resist wear and ensure consistent performance over the life of the engine.