Genuine OEM Volkswagen Tensioning Roller, part number 074130195B. This vital component is responsible for maintaining the correct tension on engine belts, which is crucial for the proper functioning of the engine's timing or accessory drive systems. Weighing 0.328 kg, this tensioning roller is engineered for smooth rotation and consistent tension. Choosing a genuine OEM tensioning roller ensures the precise spring force, bearing quality, and durability required to prevent belt slippage, excessive wear, and potential engine damage.