Product Details: The Donaldson cartridge style water separator fuel filter is designed for Paccar k371004 applications. It offers 99% efficiency in filtering particles as small as 10 microns, helping prevent pump and injector wear due to fuel contaminants. This filter ensures clean fuel delivery, reducing the risk of costly truck repairs and downtime. It features advanced emulsified water separation technology and installs easily, optimizing vehicle performance and fuel efficiency.