Genuine OEM Volkswagen Belt Pulley with Magnetic Coupling, part number 4M0260810E. This pulley is a key component in the accessory drive system, designed to transfer power from the engine to accessories like the AC compressor. The integrated magnetic coupling allows for controlled engagement and disengagement of the driven component. Weighing 1.667 kg, it measures approximately 15 cm in diameter. Genuine OEM pulleys ensure precise balance, correct belt alignment, and durable magnetic coupling for smooth, efficient accessory operation.