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Ford Fiesta 1.6L I4 Engine Air Filter Replacement Guide
How to clean or change the engine air filter in a 6th generation 2009-2015 Ford Fiesta with the Duratec 1.6L I4 motor.

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2013 Fiesta Engine Air Box
Loosen Torx T25 Screw
Front Left Screw
This automotive maintenance tutorial was specifically written to assist owners of the sixth generation (2009, 2010, 2011, 2012, 2013, 2014, 2015 and possibly also the 2016 model year) Ford Fiesta sedan or hatchback in cleaning or changing the engine air filter for the Duratec 1.6 liter inline four cylinder Ti-VCT motor.

Owners of other Ford vehicles equipped with the Sigma series of engines including the Zetec or Duratec versions including the Focus, Fusion, Puma, EcoSport C-Max and Mondeo may also find these DIY instructions to be helpful.

A few compatible replacement engine air filters with their part numbers are as follows: Motorcraft FA-1904, Fram CA10997, K&N 33-2955, Mahle LX 3157, Ecogard XA6140, Wix 49604, Hastings AF1486, Pentius PAB10997, Luber-finer AF4904 and GKI AF10997.

The only tool needed to access and replace the air filter is a Torx T-25 star bit screwdriver.

Rear Right Corner Screw
4th Screw - Front Right
Lift Off Top Half Air Box
The engine air box is located at the right front corner of the engine bay just in in front of the 12V automotive battery.

The top half of the air box is held in place by four screws.

Loosen the four screws by turning them counterclockwise with a Torx T25 star bit screwdriver.

The screws will remain attached to the air box cover.

Carefully lift the top half of the air box off the lower half.

Old Filter Exposed
Pull Out Old Filter
Inspect Both Sides
Pull the old air filter straight out of the bottom half of the box.

Inspect both sides of the old filter.


Underside of Old Filter
Clean With Vacuum
Clean Out Bottom Half
If the old filter is relatively clean, just tap out the large debris and remove any fine dust with a vacuum.

If the old filter is dark grey or black and clogged with dirt, dust, pollen, hair, leaves, insects, twigs and other debris, it should be replaced with a new element.

I always buy the Ford OEM Motorcraft FA-1904 engine air filter since it has excellent reviews on Amazon.

If you'd prefer to have a re-usable filter that will last the life time of the car, go with the K&N 33-2955 filter which will need to be washed and re-oiled every 50,000 miles.

Clean out any sand in the bottom half of the air box with a vacuum.

Lower In New Air Filter
Replace Top Half Air Box
Re-Insert Torx T25 Screws

Lower the new air filter in to the lower half of the air box with the pleats facing down.

Due to the filter's irregular shape, it can only be inserted in one way.

Lower the top half of the air box down in to place over the lower half.

Tighten Screws Clockwise
Tighten All 4 T25 Screws
Engine Air Filter Replaced
Tighten the four screws (one located at each corner) by turning them clockwise with the Torx T25 screwdriver until they are snug.

Try to avoid over tightening the screws to prevent from cracking the plastic air filter housing.

For more, check out my other 2009-2015 Ford Fiesta DIY Repair & Maintenance Guides.

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