Donaldson P550625 Fuel Filter

Fuel Filtration for Heavy-Duty Ford Applications

Donaldson P550625 is a spin-on secondary fuel filter built for heavy-duty fuel systems that require fine filtration after the primary stage. It uses cellulose media and a compact spin-on design to support clean fuel delivery in demanding service conditions.

Key Features

• Secondary fuel filter with spin-on construction
• Cellulose filter media for fuel system filtration
• SAE J1985 efficiency testing standard
• 1-14 UN thread size for service replacement
• Primary application reference: Caterpillar 1R0762
• Donaldson P550625 part number for identification and ordering

Detailed Description

This Donaldson fuel filter is specified as a secondary, spin-on unit with a 10.43-inch length, 3.69-inch outer diameter, and 100 collapse burst rating. The filter uses cellulose media and is built to the SAE J1985 efficiency test standard, with a listed 99% efficiency value of 3. The gasket dimensions and thread specification support correct service matching when replacing the filter in approved applications. It is cross-referenced to Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. For Ford A9513, AT9513, AT9522, L9501, L9511, L9513, LT9501, LT9511, LT9513, and LT9522 applications, this filter is listed as a fuel filter, spin-on secondary. Donaldson P550625 is also identified with primary application reference Caterpillar 1R0762.

What It Is Used For

• Replacing a secondary fuel filter in approved diesel fuel systems
• Maintaining fuel cleanliness after primary filtration
• Addressing restricted fuel flow caused by a loaded filter element
• Restoring service intervals when the existing filter reaches capacity
• Supporting filtration service on listed Ford heavy-duty models

Installation Notes and Tips

Verify the thread size, gasket dimensions, and overall filter dimensions before installation. Confirm the application notes for the exact Ford model and service configuration, since the fitment list identifies this part as a spin-on secondary fuel filter. Replace the filter according to the vehicle service schedule and inspect sealing surfaces during installation.

Quality Assurance

Donaldson filters are engineered for filtration service in demanding equipment and vehicle applications. P550625 is built to the listed efficiency standard and dimensional specifications for application matching.