Donaldson P550736 Fuel Filter
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Donaldson

Donaldson P550736 Fuel Filter

Brand Donaldson P550736
Collapse Burst 5.5
Efficiency 99% 27
Efficiency Test Std Sae j1488, j1985
Emulsified H2O Efficiency 95.00
Inner Diameter 0.66
Length 171.7
Outer Diameter 3.82
Overall Length 178.6
Style Cartridge
Type Water separator
Fits Kenworth · 15 vehicles

Water separator cartridge. Built for diesel fuel service with integrated moisture separation.

Fine filtration. 99% efficiency at 27 microns helps capture small contaminants.

Tested to standards. Listed to SAE J1488 and J1985 performance test methods.

Cross-references Focus Auto Parts 86656, Gates 33656 and NGK 3656 for the same application. See all 12.

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Fuel Filter Water Separator Cartridge

Donaldson P550736 is a cartridge-style fuel filter water separator built for diesel fuel systems that need water removal and fine filtration in one service part. It fits 2011-2025 Kenworth T680, fuel filter, water separator cartridge, and is a direct match for the listed application.

Key Features

  • Cartridge-style fuel filter with water separator function.
  • 99% efficiency rating at 27 microns for particulate control.
  • 95% emulsified water efficiency for moisture separation.
  • SAE J1488 and J1985 test standards listed for performance verification.
  • Collapse burst rating of 5.5 for added structural strength.
  • Donaldson P550736 for service replacement identification.

Detailed Description

This Donaldson fuel filter is engineered as a water separator cartridge for diesel fuel delivery systems. The listed dimensions include an overall length of 178.6 mm, an outer diameter of 3.82 in, and an inner diameter of 0.66 in, which are important reference points when matching the correct service filter. For buyers searching for a Kenworth T680 fuel filter water separator cartridge, P550736 provides the specified filtration and water-separation characteristics for the application shown.

This part cross-references Gates 33656 and NGK 3656 for the same application.

What It Is Used For

  • Removing water from diesel fuel before it reaches sensitive fuel-system components.
  • Capturing fine contamination that can affect injector performance.
  • Replacing a worn or restricted fuel filter cartridge.
  • Restoring proper fuel flow when the separator element becomes saturated.
  • Addressing fuel-system service needs on a Kenworth T680.

Installation Notes and Tips

Verify the filter style, dimensions, and application before installation. Confirm the service interval and inspect the housing sealing surfaces during replacement. Use the listed fitment details to match the correct Kenworth T680 fuel filter water separator cartridge application.

Quality Assurance

Donaldson lists this filter to SAE J1488 and J1985 test standards, supporting its filtration and water-separation specifications for the stated application.

Related reading

This part fits 15 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2025KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2024KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2023KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2022KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2021KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2020KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2019KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2018KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2017KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2016KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2015KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2014KenworthT68012.9L-6DIESELFuel filter, water separator cartridge
2013KenworthT68012.9LL6DIESELFuel filter, water separator cartridge
2012KenworthT68012.9LL6DIESELFuel filter, water separator cartridge
2011KenworthT68012.9LL6DIESELFuel filter, water separator cartridge
Directly replaces or cross-references 12 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Focus Auto Parts — 86656Gates — 33656NGK — 365638211984273566BF7782F76042FF1161FS19728L3578FXLPFF5555VABPN10G369FS