Genuine OEM SEAT Chain Wheel, part number 03H109569A. This precision-engineered sprocket is a vital component within the engine's chain drive system, responsible for transmitting power and maintaining accurate timing. It works in conjunction with a timing chain to synchronize the rotation of engine components. Manufactured from robust metal, it features precisely machined teeth for optimal chain engagement. Opting for a genuine OEM chain wheel guarantees the correct tooth profile, material hardness, and dimensional accuracy for reliable engine operation and extended service life.