3.0 Powerstroke Fuel Filter Change (2017-2021)
A 3.0 Powerstroke fuel filter change is one of the most important things to do when maintaining your truck. In a diesel, a dirty fuel filter is one of the most common causes of low power or worse engine issues. This guide is specific to 2017, 2018, 2019, 2020, and 2021 model year trucks. On these trucks, there is an inline fuel filter mounted on top of the engine and a fuel water separator mounted at the back of the truck by the fuel tank. For more Ford specific articles, visit our Ford section.
Tools Needed:
- 32mm socket and ratchet
- 5mm Allen bit socket and ratchet
- Drain pan
- Gloves and rags (if needed)
Parts needed:
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- Fuel filter – Motorcraft FD4627 fuel filter set or aftermarket equivalent
2017 – 2021 3.0 Powerstroke fuel filter change procedure:
- Verify that the keys are removed and that the ignition is in the Off position
- Locate the fuel water separator at the rear of the truck and remove the skid plate beneath it if equipped
- Place the drain pan underneath and drain all contents into the pan
- Close the drain and remove the cap using the 32mm socket and ratchet
- Remove and replace the O ring and filter from the cap
- Reinstall cap to fuel filter housing (as well as skid plate if equipped)
- Remove the upper engine cover to locate the inline fuel filter
- Remove the 5mm allen hold down bolts
- Disconnect both fuel lines from the filter by squeezing the clip and pulling away from the filter
- Replace filter and connect both fuel lines by pushing them onto it
- Reinstall hold down screws
- Reinstall upper engine cover
- Cycle the ignition to the On position to prime fuel system (wait 30 seconds, cycle the ignition to the Off position – then cycle back on. Repeat 3 times to fully prime system prior to start up)