The Kenworth W900L Stainless Steel Lower Coolant Tube is a practical and reliable solution for Kenworth W900L models with Cummins ISX engines. Made from durable 304 stainless steel, this tube is designed to fit seamlessly and replace the OEM number F66-1406 and F661406. With its sturdy construction and compatibility with both OEM and aftermarket numbers G66-1406 and F661406, this coolant tube offers a reliable and long-lasting solution for your Kenworth W900L.