Owners of other Mitsubishi vehicles such as the Outlander Sport, Eclipse Cross, Mirage, Mirage G4, Lancer, ASX, Montero Sport, Pajero, Xpander, Strada and RVR may also find these DIY instructions to be helpful.

The OEM (original equipment manufacturer) engine air filter was part number Mitsubishi MR968274 (made in Japan by Denso).

A few other compatible replacement aftermarket engine air filters with their part numbers are as follows: Premium Guard PA99078, EcoGard XA10418, Bi-Trust CA10910 and Pentius PAB10910.

Please double check the OEM part number on your old filter before buying a new one. The correct part number may vary depending on the model year, trim level, engine type and your region of the world.

No tools are required to access and replace the engine air filter.

If you have trouble removing or installing the filter due to the tight working area, you might need a Phillips head screwdriver or a 10mm socket with a 1/4" drive ratchet to disconnect the air intake tube.

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

The engine air filter housing is situated in front of the windshield and to the left of the electrical fuse box.

There are two silver metal latches on the top edge of the air box.

Repeat the process to release the rear latch situated closer to the cowl and the windshield.

Pull apart the two halves of the air box to reveal the old filter.

Make a mental note of how the old filter is orientated in the box. There are three rounded corners and one somewhat square looking corner.

Check both sides of the old filter.

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

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

I had trouble getting the new filter properly installed in the air box, so I decided to detach the air intake tube from the air box cover.

Pull the rubber air intake hose off the plastic tube on the air box cover.

Pull the small rubber hose off the top of the air box cover.

Now you can easily see how to properly install the new filter into the air box (on the right side).

If the new filter doesn't seem to fit in the air box, try rotating it until the 3 rounded corners and the 1 square corner are in the correct orientation.

Line up the two tabs on the bottom edge of the air box cover with their corresponding slots on the bottom edge of the air filter housing.

Push the two halves of the air box assembly back together.

Push down on the latches to secure them into place.

You should hear or feel the latches "click" when they are properly locked into position.

Double check that the two halves of the air box are flush together at every edge with no part of the new filter visible.

Push the wire loom back into its holding slot.

Push the air intake hose over the plastic tube on the air filter housing.

Tighten the hose clamp by turning the screw in the clockwise direction with either the Phillips head screwdriver or a 10mm socket with a 1/4" drive ratchet until it is snug.

According to the "Warranty & Maintenance Manual" the service interval specification for the engine air filter is to change it every 30,000 miles (48,000 km) or at least every 24 months (2 years).

(If you start the engine and it sounds much louder, the air box might be separated on the lower edge.)

Please check out all of the 2014-2021 Mitsubishi Outlander DIY Repair & Maintenance Guides.