Description
Protect Your Fuel System
The Donaldson P551011 Water Separator keeps your fuel system clean and dry.
It removes water, dirt, and rust particles from diesel fuel before they reach your injectors.
Clean fuel helps your engine start easier, run smoother, and last longer.
This filter is used in many trucks, buses, and heavy equipment with diesel engines.
OEM-Quality Replacement
The P551011 is a direct OEM replacement for many factory fuel water separators.
It installs easily and fits standard filter heads used in diesel applications.
Specifications:
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Part Number: P551011, FS19915, DDE A0000903651, DMX P551011
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Type: Fuel/Water Separator
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Filtration Efficiency: 99% at 10 microns
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Height: 6.93 in.
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Outer Diameter: 3.66 in.
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Thread: 1-14 UNF
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Features: Water-separation barrier and high-efficiency media
Each unit is pressure-tested to meet OEM durability standards.
Built Tough for Heavy-Duty Engines
The Donaldson P551011 Water Separator uses strong, corrosion-resistant steel housing.
Its high-capacity media traps fine particles while the inner barrier separates water from diesel fuel.
This design protects fuel injectors and extends engine life.
Donaldson filters are trusted worldwide for reliability in extreme conditions.
Easy to Install
Installation is fast and simple.
Steps:
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Drain the old filter.
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Clean the mounting base.
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Lubricate the new gasket.
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Spin on by hand until the gasket seats.
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Prime the system and check for leaks.
No special tools or modifications are needed.
Applications
The Donaldson P551011 fits many on-highway and off-road diesel engines, including:
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Volvo
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Mack
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Freightliner
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Caterpillar
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Cummins
(Always confirm your OEM part number before ordering.)
Why Choose TZ Parts
At TZ Parts, we provide high-quality filtration and engine parts trusted by fleets across the U.S.
Our Donaldson filters meet or exceed OEM standards for performance and protection.
This is a Quality TZ Parts Product, built for long-term reliability and easy maintenance.
We ship fast and back every order with professional service and product knowledge.
Shipping and Pickup
We offer fast nationwide shipping and local pickup at our Fort Myers, Florida location.
📍 Address: 17050 Alico Commerce Ct, Fort Myers, FL 33967
📞 Call: 239-342-7777
💬 Text: 239-341-7777
📧 Email: info_fl@truckzoneparts.com
Learn More
Read about diesel fuel safety at the U.S. Department of Transportation (external link, nofollow).
Explore more Fuel Filters and Water Separators on TZParts.com.
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