Donaldson P550944 Fuel Filter Water Separator Spin-On

The Donaldson P550944 is a spin-on fuel filter with integrated water separator, engineered to protect diesel engines from fuel contaminants and water ingestion. Donaldson is a globally recognized leader in filtration technology, and this filter is built to deliver reliable performance in demanding heavy-duty applications including construction equipment, agricultural machinery, and commercial vehicles.

Water in diesel fuel is one of the leading causes of injector failure and engine wear. The P550944 combines fuel filtration and water separation into a single, convenient spin-on cartridge, removing both particulate contamination and free water before they can reach sensitive fuel system components.

Key Features:

• Spin-On Design: Tool-friendly installation and removal for fast, clean filter changes
• Integrated Water Separator: Removes free water from diesel fuel to protect injectors and fuel system components
• High-Efficiency Filtration Media: Captures harmful particulates to maintain fuel system cleanliness
• Heavy-Duty Construction: Durable canister design built for commercial and industrial equipment environments
• OEM-Quality Performance: Meets or exceeds original equipment manufacturer specifications
• Donaldson Filtration Engineering: Backed by decades of filtration expertise and rigorous quality standards

The Donaldson P550944 is a direct replacement filter suitable for a wide range of diesel-powered equipment. Its spin-on format ensures a secure, leak-free seal and makes routine maintenance straightforward for technicians and fleet operators alike.