Kenworth's W900B and W900L coolant reservoirs are essential components for keeping the coolant systems of these powerful semi-trucks operating at optimal levels. Designed to seamlessly integrate with Kenworth and Peterbilt models, these reservoirs provide a reliable and durable solution for managing engine coolant levels. Whether you need a replacement reservoir, caps, or sensors, the available options cater to a wide range of applications, ensuring you can find the perfect fit for your specific Kenworth or Peterbilt truck. With a focus on quality and compatibility, these coolant reservoirs help maintain the efficiency and longevity of your semi-truck's cooling system, making them a must-have accessory for any Kenworth or Peterbilt owner.