Donaldson P551028 Fuel Filter

Fuel Water Separator Filter

Donaldson P551028 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.

Key Features

• Spin-on water separator design for diesel fuel filtration
• Twist&Drain construction for easier water removal
• Cellulose filter media
• 99% efficiency rated to SAE J1488 and J1985 test standards
• Emulsified water efficiency rated at 95%
• Thread size: M22 x 1.5
• Primary application reference: Mack 483GB472M

Detailed Description

This Donaldson fuel filter water separator is engineered as a direct-service replacement for heavy-duty applications that require water separation in the fuel system. The spin-on format and M22 x 1.5 thread size support straightforward service, while the 243.7 mm length and 107.3 mm outer diameter reflect its heavy-duty filter construction. P551028 is listed for Mack CL, Mack CV, and Mack CH applications, including Fits 1991-2003 Mack CL, N/A; Fits 2001 Mack CV, N/A; and Fits 1989 Mack CH, N/A. This part cross-references Baldwin BF1256 and Anchor 3589 for the same application.

What It Is Used For

• Removing water from diesel fuel before it reaches the engine
• Addressing fuel contamination that can affect injector performance
• Supporting service intervals where water separation is required
• Replacing a worn or restricted spin-on fuel filter
• Maintaining filtration in heavy-duty Mack fuel systems

Installation Notes and Tips

Verify thread size, gasket dimensions, and application match before installation. Use the listed fitment notes to confirm the correct Mack CL, CV, or CH application, and follow the vehicle service procedure for priming and leak checks after replacement. The filter is not for marine applications.

Quality Assurance

Donaldson P551028 is built to SAE J1488 and J1985 efficiency standards and is rated for 100 collapse burst performance. The Twist&Drain product line focuses on serviceable fuel-water separation for demanding diesel applications.