Genuine OEM Porsche Radiator Fan Drive Belt, part number 99919237250. This belt is specifically designed to drive the radiator cooling fan, which is essential for maintaining optimal engine operating temperature. Proper functioning of this belt is critical to prevent engine overheating. The belt has a length of 0.49684 meters and a width of 0.23125 meters. Genuine OEM belts are manufactured to precise specifications, ensuring correct tension, optimal material composition for durability, and exact pulley engagement, which is crucial for reliable cooling fan operation.