For a 2021 Ford Ranger, there are two air filters to consider: the engine air filter located in the engine bay, and the cabin air filter located behind the glove box. This guide explains where they sit and how to access them.
Engine air filter location
The engine air filter is housed in a rectangular black plastic box in the engine bay, typically on the driver's side. It sits along the intake path, connected to a large plastic snorkel that runs toward the front grille. Replacing the filter involves opening the box and inserting a fresh filter in the correct orientation.
To access the engine air filter, you may need to unscrew or unclip the lid and lift it away from the box. Before you begin, make sure the engine is off and cool, and that you have the correct replacement filter for the Ranger's 2.3L EcoBoost engine.
How to replace the engine air filter
Follow these steps to replace the engine air filter:
- Park on a level surface and turn off the engine. If you prefer, disconnect the negative battery terminal for extra safety.
- Open the hood and locate the engine air filter housing on the driver's side of the engine bay. It is a black plastic box with a removable lid.
- Release the clips or screws holding the lid. Some models use spring clips; others use small Phillips screws.
- Lift the lid and remove the old filter. Note the orientation of the filter so you install the new one the same way (air flow arrows on the filter should point toward the engine's throttle body).
- Insert the new filter, reseat the lid, and secure the clips or screws. Reconnect any hoses or ducts you moved.
- Close the hood and run the engine briefly to ensure correct operation.
Regular replacement reminders typically range every 30,000 miles or as indicated in the owner's manual; check your manual for the exact interval based on driving conditions.
Cabin air filter location
The cabin air filter on the 2021 Ranger is located behind the glove box on the passenger side of the interior. Access is gained by lowering or removing the glove box to reveal the filter housing.
Replacing the cabin filter improves interior air quality and HVAC performance, and is a simple do-it-yourself task for most owners.
How to replace the cabin air filter
Steps to replace the cabin filter:
- With the glove box open, release the side stops or dampers to allow the glove box to drop down fully. You may need to press in the sides of the glove box to unhook it.
- Look for the rectangular cabin filter housing behind the glove box or on the side panel. Remove the cover by unclipping or unscrewing it.
- Take out the old filter and note its orientation. Take the new filter and insert it so the arrows point in the direction of airflow (from the outside to the cabin).
- Reattach the housing cover, lift the glove box back into place, and ensure it latches correctly.
Replace the cabin filter according to the recommended interval, typically every 15,000 to 30,000 miles depending on usage and environmental conditions; consult your owner's manual for specifics.
Summary
In summary, the 2021 Ford Ranger has two air filters: the engine air filter in the engine bay on the driver's side, and the cabin air filter behind the glove box on the passenger side. Both can be accessed with basic tools and replaced using simple steps. Regular checks help maintain engine performance and interior air quality.