Donaldson P550821 Fuel Filter

Reliable Fuel Filtration for Navistar Vehicles

The Donaldson P550821 fuel filter is designed to provide efficient fuel filtration for Navistar applications, specifically compatible with Navistar part number 3004473c91. This cartridge-style fuel filter ensures proper fuel delivery by maintaining clean fuel flow and protecting engine components from contaminants.

Key Features of Donaldson P550821 Fuel Filter

• Efficiency rating of 50% based on SAE J1985 testing standards
• Cartridge style design for straightforward replacement
• Inner diameter of 1.77 inches and outer diameter of 3.74 inches
• Length of 143.5 mm with an overall length of 183.6 mm
• Primary application for Navistar 3004473c91 fuel systems

Detailed Product Description

The Donaldson P550821 fuel filter is engineered to meet the filtration requirements of Navistar engines, ensuring contaminants are effectively removed from the fuel before reaching the engine. With a 50% efficiency rating tested under SAE J1985 standards, this filter balances filtration performance with fuel flow. The cartridge style allows for easy installation and replacement, while the precise dimensions—1.77 inch inner diameter, 3.74 inch outer diameter, and 183.6 mm overall length—ensure compatibility with the specified Navistar fuel systems. This filter helps maintain engine performance and longevity by preventing fuel system blockages and wear caused by impurities.

Applications and Problem Solving

• Compatible with Navistar vehicles requiring part number 3004473c91 fuel filters
• Prevents fuel contamination that can cause injector clogging
• Reduces risk of engine misfires due to dirty fuel
• Helps avoid premature wear of fuel pump components
• Maintains consistent fuel flow for optimal engine operation

Installation Notes and Tips

When replacing the Donaldson P550821 fuel filter, ensure the vehicle is off and the fuel system is depressurized. Verify the filter dimensions match the existing component to confirm fitment. The cartridge style design simplifies installation, but proper sealing and alignment are critical to prevent leaks. Dispose of the old filter according to local regulations.

Quality Assurance and Warranty

Donaldson fuel filters are manufactured to meet industry standards for filtration efficiency and durability. The P550821 model is tested to SAE J1985 standards to ensure consistent performance. While specific warranty details are not provided, Donaldson products typically come with manufacturer-backed quality assurance to support reliable operation in Navistar fuel systems.