Donaldson P551034 Fuel Filter

Fuel Water Separator Filter

Donaldson P551034 is a spin-on fuel filter water separator built for heavy-duty diesel fuel systems. It uses cellulose media and Twist&Drain technology to separate water from fuel while maintaining serviceable filtration performance.

• Spin-on fuel filter water separator for diesel fuel systems
• Twist&Drain design for easier water draining during service
• Cellulose filter media with 99% efficiency at 10 microns
• Emulsified water efficiency rated at 95%
• Thread size: 1-14 UN

Application Details

Compatible with Freightliner and Western Star heavy-duty trucks, including Fits 2000-2016 Freightliner Columbia, N/A; Fits 2001-2015 Freightliner Coronado, N/A; Fits 2004-2009 Freightliner Century Class, N/A; Fits 2001-2009 Freightliner Classic XL, N/A; Fits 2016-2017 Freightliner M2, N/A; Fits 2002-2015 Western Star 4900FA, N/A; Fits 2002-2015 Western Star 4900SA, N/A; Fits 2002-2009 Western Star 4900EX, N/A; Fits 2011-2015 Western Star 4900EX, N/A; Fits 2002-2008 Western Star 6900XD, N/A; and Fits 2011-2012 Western Star 6900XD, N/A. Primary application reference: RACOR S3226T. Donaldson P551034 also cross-references Baldwin BF1347 for the same application.

What It Helps Address

• Water contamination in diesel fuel
• Reduced filtration efficiency from a loaded filter
• Service intervals that require easier draining
• Fuel system protection needs in heavy-duty operation

Installation Notes

Use the spin-on mounting style and verify thread size, gasket dimensions, and overall filter length before installation. This filter is not for marine applications. Confirm the application against the vehicle’s existing fuel filter water separator specification before service.

Quality Assurance

Donaldson P551034 is built to SAE J1488 and J1985 efficiency test standards and is specified with a 100 collapse burst rating.