Donaldson P550937 Water Separator Fuel Filter – Spin-On, 1-1/4"-12 UN ThreadThe Donaldson P550937 Water Separator Fuel Filter is a high performance spin on filter designed to protect engines by removing water and contaminants from fuel systems. Built with a durable 1 1 4" 12 UN thread, a 4. 66" outer diameter, and a 12. 24" length, this filter ensures reliable operation and extended engine life. Compatible with Komatsu 6003114510 equipment, it delivers dependable filtration for demanding on and off road applications.