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Cummins® QSK Engines

Better Fuel Filtration is Key for Modern Fuel Systems

Today‘s diesel engines need to maintain high performance levels to remain compliant with stringent Tier 4 emissions regulations. Fuel filtration plays a key role, with current high pressure common rail fuel injectors operating at pressures up to 2,000 - 3,100 bar / 30,000 - 45,000 psi. This means it's important to deliver CLEAN FUEL to today‘s precision designed fuel system pumps and injectors to maintain performance. Today's engines also operate in a wide range of environments that include vibration, fuel pump pulsation and surging fuel flows. It all adds up to big challenges for your fuel filters. 

That's exactly why we developed Donaldson Blue® filters with our pioneering media technology, Synteq XP. Donaldson Blue® DBF5782 consistently retains particles under high pressure common rail fuel system dynamics (engine vibration), protecting your hard-working equipment and maximizing your uptime. Compared to the competition’s best product, the Donaldson Blue® DBF5782 averages 4x CLEANER under heavy-duty vibration testing over the life of the filter. Lower particle release means less micro-contamination is flowing downstream to the fuel injectors.

Donaldson Blue® filters deliver the cleanest fuel – period.


  • Cummins® QSK engines used in popular off-road equipment for mining, construction and oil & gas industries


  • Minimize expensive injector and fuel pump repairs
  • Reduce unplanned downtime
  • Clean fuel is better for HPCR fuel systems, including injectors, pumps and engines
  • Donaldson Blue® delivers the cleanest fuel possible. Period.


  • Best capture and retention of injector damaging contaminants
  • Best performance in heavy-duty environments (inferior filters can “slough” contaminant during engine vibration)
  • Best available fuel filtration media – Synteq XP
  • Best protection for today’s sophisticated HPCR injectors
Cummins® is a registered trademark of Cummins, Inc.
This servicing information is provided as a best practices guide. It is not intended to replace or supersede the service instructions supplied by your engine or equipment manufacturer.

Spin-On Filters 

1.     Unscrew and remove the old filter and gasket. 
        Properly dispose of the used filter according to local regulations.

2.     Wipe the filter head with a clean cloth.

3.     DO NOT pre-fill with fuel.

4.     Apply a thin film of clean motor oil to the gasket.

5.     Align threads; spin filter on until gasket contact.

6.     Follow icons on filter to tighten to tighten the appropriate amount.

7.     Start engine and check for leaks.

Donaldson Fuel Filter Servicing

Donaldson provides best practices and recommended steps for fuel filter servicing. Effective fuel filter maintenance is the key to optimal engine performance.