The OEM Genuine Toyota 4RUNNER / Lexus GS300 Drive Belt Idler Pulley 16604-50030 is a black, direct replacement part manufactured by Toyota in Japan. This genuine OEM part is designed for a specific fitment type and comes as a single unit. It is a high-quality, durable component that is sure to provide reliable performance for your vehicle. With its OE/OEM part numbers and interchange part numbers, this idler pulley is a perfect choice for ensuring smooth and efficient belt operation in your Toyota or Lexus vehicle.