Upgrade your semi-truck's cooling system with the International WorkStar Series Coolant Reservoirs. These durable, non-pressurized reservoirs are designed to replace OEM parts, ensuring optimal engine cooling and temperature regulation. Compatible with various models, they provide reliable, long-lasting performance. Easy to install, these reservoirs help keep your engine running smoothly in all conditions. With multiple sizes and configurations available, find the perfect fit to enhance cooling and extend engine life.