Genuine OEM Nissan idler pulley, part number 1307700QAK. This idler pulley is part of the engine's timing system, designed to guide and maintain the correct tension on the timing belt or chain. Proper tension is critical for accurate valve timing and preventing slippage, which can cause severe engine damage. It is mounted within the engine compartment, often near the timing belt. Made from durable materials with precision bearings for smooth, quiet operation. Genuine OEM parts ensure the correct diameter, bearing quality, and mounting specifications for reliable performance.