The Peterbilt 388 Coolant Reservoirs product lineup offers a range of essential cooling system components for Peterbilt and Kenworth semi-trucks. From replacement coolant reservoir caps to complete assemblies with integrated sensors, this product lineup provides the high-quality parts needed to keep your truck's cooling system functioning at its best. Key features include durable plastic construction, direct OEM replacements, and compatibility with both Cummins and CAT engines. Whether you need a simple cap or a full coolant reservoir unit, this product lineup has the reliable solutions to maintain optimal temperature control and prevent overheating in your Peterbilt or Kenworth semi. With a focus on easy installation and long-lasting performance, these Peterbilt 388 Coolant Reservoirs are a smart choice for keeping your rig on the road.