The Kenworth W900L Stainless Steel Upper Coolant Tube is a durable and practical solution for Kenworth W900L models with a Cummins ISX engine. Made from 304 stainless steel, this coolant tube is built to last. It fits seamlessly with OEM numbers F66-1065 and F661065, making it a reliable replacement part. With its sturdy construction and compatibility, this coolant tube ensures optimal performance and longevity for your vehicle. Sold individually, this product offers a cost-effective solution for maintaining your Kenworth W900L's cooling system.