5311685 | Genuine Cummins® Fuel Filter Assembly Fleetguard

1. Remove contaminants from fuel

• Filters out dirt, rust, debris, and water

• Prevents contaminated fuel from reaching the engine

2. Protect fuel injectors

• Injectors have very small openings

• Clean fuel prevents clogging and damage

3. Protect the fuel pump

• Stops debris from wearing or damaging the pump

• Helps maintain correct fuel pressure

4. Ensure proper engine performance

• Clean fuel allows proper combustion

• Prevents hesitation, stalling, misfires, and power loss

5. Improve engine reliability and lifespan

• Reduces wear on fuel system components

• Extends the life of injectors, pump, and engine

1. Hard starting or no start

• Engine cranks longer than normal

• Fuel pressure is too low because fuel flow is restricted

2. Loss of power (especially under load)

• Hesitation during acceleration

• Weak response when climbing hills or towing

• Engine may feel like it’s “starving” for fuel

3. Engine hesitation or surging

• Jerking or stumbling while driving

• Inconsistent fuel flow to the engine

4. Engine stalling

• Stalls at idle or while driving

• More common at higher speeds

5. Poor fuel economy

• Engine works harder due to improper fuel delivery

• Results in increased fuel consumption

6. Check Engine Light

• Common codes:

  • Fuel pressure too low

  • Lean condition (P0171, P0174)

• ECM detects improper fuel delivery

7. Rough idle or misfires

• Inconsistent combustion

• Often caused by restricted fuel flow

8. Water-in-fuel warning (diesel engines)

• Warning light may come on

• Water separator in the fuel filter assembly is full