Experience top-notch braking performance with this genuine OEM hydraulic power booster brake pump for 2011-2019 Infiniti QX56 models. This brake booster assembly, with part number 540, and interchange part number 540-50405, comes with a master cylinder and has a mileage of 113K. It is a perfect fit for your vehicle and is covered by a manufacturer warranty.Included in the package is the brake booster, which ensures the right amount of brake fluid pressure and improves the overall efficiency of your brake system. Say goodbye to unreliable braking with this power booster brake pump. Shop now and get the assurance of top-quality braking performance!