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Ford Mustang Engine Air Filter Replacement Guide
How to change the EcoBoost 2.3L turbocharged I4 engine's air filter in a 6th generation 2015 to 2022 Ford Mustang.

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2019 Mustang 2.3L I4
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Engine Air Filter Housing
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Right Rear Metal Latch
This automotive maintenance tutorial was specifically written to assist owners of the S550 sixth generation 2015, 2016, 2017, 2018, 2019, 2020, 2021 and 2022 Ford Mustang in cleaning or changing the engine air filter element for the EcoBoost 2.3 liter turbocharged inline four cylinder engine.

The procedure should be the same or very similar for the 5.0L V8, 5.2L V8 and 3.7L V6 engines.

(The 7th generation S650 Ford Mustang is supposed to be released in 2022 as a 2023 model year vehicle.)

Owners of other Ford and Lincoln vehicles such as the Fusion, Taurus, Escape, EcoSport, Flex, Expedition, Bronco, Ranger, Transit, F-150, C-Max, Fiesta, Focus, Edge, MKZ, Continental, Corsair, Nautilus, Aviator and Navigator may also find these DIY instructions to be helpful.

A few compatible replacement engine air filters with their part numbers include the following: Motorcraft FA1918 EcoGard XA10421, Premium Guard PA8156, Purolator A48156 and Flowmaster 615026.

No tools are needed to access and replace the air filter.

The first two steps are to open the hood and then move to the right (driver) side of the engine bay.

The black plastic rectangular shaped engine air box is situated behind the driver side headlight housing and in front of the brake fluid reservoir.



 

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Swing Down To Release
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Release Left Rear Latch
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Pull Open Air Box Cover
There are two metal latches that secure the air box cover in place.

One fastener is at the left rear corner and the other is situated at the right rear corner.

Pull the tab on the top of the clips away from the air box cover to release them.

Lift the cover off the top of the air box.

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Old Air Filter Exposed
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Lift Out Old Air Filter
Slide the three slots on the front of the cover off the three tabs on the front of the air box.

Lift the old air filter straight out of the bottom half of the housing.

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Inspect Both Sides
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Clean With Vacuum
Inspect both sides of the old air filter.

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

The Ford OEM (original equipment manufacturer) filter part number is Motorcraft FA1918.

If the old filter is relatively clean, just tap out the large debris and remove any fine dust with a vacuum.

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Clean Out Bottom Half
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Lower In New Air Filter
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Three Tabs - Front Edge
If your vacuum cleaner has a crevice attachment, clean out any sand or other debris in the bottom half of the air box.

Orientate the new air filter with the pleats facing down and the "shark fin" shaped piece in the correct position.

The metal mesh screen and the rubber gasket should be facing up towards you.

Lower the new filter down into the bottom half of the air box.

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Three Slots Front of Cover
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Slide Slots Over Tabs
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Swing Up Metal Latch
Line up the three slots on the front edge of the cover with their corresponding three plastic tabs on the front edge of the air filter housing.

Lower the rear edge of the cover down in to place.

Swing up the metal latches and snap the clips into place over the top edge of the air box cover.

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Secure Right Rear Latch
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Filter Cover Secured
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Filter Change Complete
Make sure the two latches are securely in place.

Double check that the two halves of the air box are flush together with no part of the new filter or the rubber gasket visible at the edges.

Be sure to write down the filter change in your vehicle's service records.

The service interval specification in the owner's manual for the engine air filter is to change it every 30,000 miles (or 48,000 km).

I also recommend checking and cleaning the filter at every oil change. An oil change and oil filter replacement should be completed in the range of every 3,000 miles to 10,000 miles depending on your unique driving conditions and indicated by the "Intelligent Oil-Life Monitor" system.

For more, please check out all of the 2015-2022 Ford Mustang DIY Repair & Maintenance Guides.
 

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