Genuine OEM Volkswagen camshaft, part number 07L109102S. The camshaft is a critical engine component that controls the opening and closing of the intake and exhaust valves in precise synchronization with the crankshaft. This part is manufactured to exact factory tolerances to ensure correct valve lift and duration. Genuine OEM camshafts are essential for maintaining correct engine timing and preventing mechanical interference, providing the durability required for high-stress engine operation.