Two — one engine air filter and one cabin air filter.
In general, a 2012 Honda Pilot uses separate filtration for the engine and the passenger cabin. The engine air filter cleans incoming air before it reaches the intake manifold, improving combustion efficiency and performance. The cabin air filter traps dust, pollen, and other particulates that come through the vehicle’s ventilation system, helping to keep the interior air cleaner.
These two filters are the ones typically checked and replaced during routine maintenance:
- Engine air filter — located in the engine bay in a rectangular housing; keeps contaminants from entering the engine via the air intake.
- Cabin air filter — located behind the glove box (or under the dash on some trims); cleans air entering the HVAC system for the passenger compartment.
Regular replacement helps maintain engine performance and cabin air quality. Replacement intervals vary by driving conditions and environment; consult the owner's manual or a Honda technician for exact intervals for your vehicle.
Notes on maintenance and access
Accessing the engine air filter typically requires releasing a few clips or bolts on the housing lid, removing the old filter, and sliding in a new one with the correct orientation. Accessing the cabin air filter usually involves dropping the glove box or removing a panel to reach the filter housing. When replacing, ensure the seals are clean and the housing is securely reassembled to avoid unfiltered air leaks.
Summary
In short, the 2012 Honda Pilot has two air filters: one engine air filter and one cabin air filter. Regular inspection and timely replacement—per the owner's manual and driving conditions—help maintain engine performance and interior air quality.