Genuine OEM Audi Crankshaft Timing Gear, part number 03G105212D. This essential engine component is mounted on the crankshaft and plays a critical role in synchronizing its rotation with other engine parts, such as the camshaft, for precise valve timing. Weighing 0.469 kg, this gear is manufactured to exact tolerances for reliable and accurate engine operation. Choosing genuine OEM ensures the correct tooth profile, material hardness, and precise fitment, which are vital for maintaining engine timing and preventing catastrophic damage.