Genuine OEM BMW Crank Timing Sprocket, part number 11211719984. This sprocket engages with the timing chain or belt to synchronize engine components. It is a critical component for maintaining precise engine timing. The part weighs 0.264 kg and has dimensions of 0.047m x 0.047m x 0.043m. Genuine OEM sprockets are manufactured to exact tolerances to ensure proper engagement and longevity within the timing system.