Genuine OEM Nissan Chain Guide, part number 130915X00A. This component is a critical part of the engine's timing chain system. Its function is to guide the timing chain, maintaining correct tension and alignment to ensure the engine's valves and pistons operate in perfect synchronization. Manufactured from robust materials, it provides reliable performance and longevity. The image shows a side guide for the timing chain. Genuine OEM parts are essential for maintaining the precise timing and smooth operation of the engine.