The Ford F-250 Super Duty typically uses two air filters: one for the engine’s air intake and one for the vehicle’s cabin HVAC system.
The exact count can vary by model year and market. Older generations of the F-250 did not always include a cabin air filter, while newer builds commonly feature both filters. If you’re unsure about your specific truck, consult the owner’s manual or inspect the filter housings under the hood and behind the glove box to confirm.
Two filters in most modern F-250s
Here’s what you’re most likely to find in the current lineup and recent generations.
- Engine air filter: located in a rectangular box under the hood, usually near the intake tube. It protects the engine from dust and debris. Replacement intervals are typically specified by Ford (often around 15,000–30,000 miles, depending on conditions). Use an OEM or equivalent filter and ensure the housing seal is clean and intact.
- Cabin air filter: sits inside the HVAC housing, commonly behind the glove box or beneath the dash on the passenger side. It filters pollen, dust, and odors entering the cabin. Replacement intervals vary by trim and market but are commonly advised around 15,000–25,000 miles. Some trims use a standard filter, while others offer an activated charcoal version for odor control.
To confirm the exact configuration for your F-250, check the owner’s manual or ask a dealer service department, and inspect the air-filter housings to locate both filters.
Year-to-year variations
Air-filter configurations have varied over time. In many older F-250 models, only the engine air filter was standard, with no dedicated cabin filter. Beginning in later generations, cabin filtration became more common, and in current production two filters are standard on most market versions.
- Pre-2010s: engine air filter only was common; cabin filter not standard in most configurations.
- 2011–2016: cabin air filter began appearing on some trims and markets; availability varied by region and model.
- 2017–present: two filters are standard in most US/Canada builds; both engine and cabin filters are typically included, with replacement intervals matching maintenance schedules.
Regardless of year, the best way to verify is to check the glove box area for the cabin filter and the engine intake box under the hood, and to consult the vehicle’s manual for recommended replacement intervals.
How to locate and replace
Replacement is straightforward on most current F-250s, but always ensure the engine is off and cool before opening any filter housings. The following steps outline the typical process for a recent model year.
- Engine air filter: open the hood, locate the engine air box, unclip or unbolt the lid, remove the old filter, inspect the box for debris, insert a new filter with the correct orientation, reseal the box, and close the lid. Start the engine and listen for any air leaks or unusual sounds.
- Cabin air filter: locate the HVAC housing (often behind the glove box or under the dash), remove the access panel, slide out the old filter, insert a new one with the airflow arrows pointing in the correct direction, reattach the panel, and test the AC/heat at multiple speeds to ensure smooth airflow.
If you’re not comfortable performing the replacement yourself, a quick service visit can replace both filters, which is especially advisable in dusty or pollen-heavy environments.