Genuine OEM Audi Crankshaft Pulley, part number 06F105243J. This pulley is a vital component of the engine's crankshaft assembly, responsible for driving various accessory belts such as the alternator, power steering pump, and air conditioning compressor. It is mounted at the front of the engine, directly on the crankshaft. This multi-groove pulley is finished in black and weighs approximately 1.75 kg. Using a genuine OEM crankshaft pulley ensures precise balance, correct belt alignment, and effective vibration dampening for optimal engine performance and longevity.