The Donaldson P604997 is a high-performance spin-on fuel filter water separator designed to protect sensitive fuel injection systems by efficiently removing water and particulate contaminants from diesel fuel. Featuring a robust construction and advanced filtration media, this genuine Donaldson filter ensures optimal engine performance and longevity. It has an outer diameter of 93 mm, a length of 175 mm, and a M20 x 1.5 thread size, providing reliable filtration for various heavy-duty applications.