Genuine OEM Nissan Rebound Stopper, part number 54464CY00C. This part functions as a suspension stopper to prevent excessive compression during heavy impacts or load. It is typically located within the suspension assembly, often near the shock absorber. The stopper is made from durable rubber or polyurethane to absorb impact energy. Genuine OEM parts are manufactured to exact specifications, ensuring proper function and longevity, critical for suspension components.