Genuine OEM Citroen Belt Tensioner, part number 1636996080. This component is crucial for maintaining the correct tension on the engine's accessory drive belt, preventing slippage and ensuring efficient power transfer to various engine-driven accessories. It is typically located within the engine's front accessory drive system. Weighing approximately 0.81 kg, this tensioner is built to factory specifications. Choosing a genuine OEM belt tensioner ensures precise alignment, optimal spring force, and durable construction for reliable, vibration-free operation and extended service life.