Genuine OEM Citroen Belt Tensioner, part number 1613840080. This component is essential for maintaining the correct tension on the engine's accessory drive belts, ensuring efficient operation of connected systems. It features a pulley with an approximate diameter of 51mm and is an integral part of the engine's belt drive system. Weighing approximately 0.665 kg, this tensioner is constructed with robust materials for long-term performance. Choosing a genuine OEM tensioner ensures factory-specified tensioning force, precise alignment, and material quality, which are critical for preventing premature belt wear and system failure.