The engine air filter sits in a rectangular housing in the engine bay, while the cabin air filter is located behind the glove box in the passenger compartment. Both are accessible for replacement with basic tools.
Engine air filter location
Below are the steps and details to locate and replace the engine air filter in a 2011 Pilot.
- Open the hood and look for a rectangular black plastic box with a large intake hose running to the engine. This is the engine air filter housing.
- The housing is typically on the passenger side of the engine bay, toward the front of the vehicle. It may be labeled or have a visible air intake tube connected to it.
- Release the clips or screws securing the lid. Depending on the model, you may need simple flathead or Phillips screws, or just squeeze clips to unlock the cover.
- Lift the lid and carefully remove the old engine air filter from its frame. Take note of the filter’s orientation for the new one.
- Inspect the gasket seal around the housing; replace the seal if it’s cracked or worn. Insert the new filter so it sits flat in the frame, matching the orientation of the old one.
- Reattach the lid and secure it with the clips or screws. Ensure there are no gaps around the edges.
- Reconnect any hoses or clamps that you may have disturbed during the process. Close the hood once everything is secure.
Replacing the engine air filter is a routine maintenance task that helps the engine breathe properly and maintain fuel efficiency. Typical replacement intervals are around 15,000–30,000 miles under normal conditions, with more frequent changes in dusty or harsh environments. Always check your owner’s manual for the exact recommendation for your vehicle.
Cabin air filter location
The cabin air filter cleans the air entering the interior via the HVAC system. In the 2011 Pilot, it lives behind the glove box, with access through a small cover or panel.
- Open the glove box and gently release the stops to allow the box to sag downward, or remove the damper arms if your model uses them.
- Behind the glove box, locate the cabin air filter cover. It is typically held in place by clips or a few small screws.
- Release the cover and pull out the old cabin air filter. Take note of the air-flow direction printed on the filter.
- Insert the new filter with the correct orientation, ensuring it sits firmly in the housing.
- Reattach the cabin filter cover, then lift the glove box back into its normal position and resecure any stops or damper arms.
Cabin air filter replacement helps maintain interior air quality and HVAC efficiency. A common recommendation is to replace the cabin filter every 15,000–25,000 miles or annually, depending on climate, pollution, and driving conditions. Refer to your owner’s manual for the exact guideline for your vehicle.
Summary
For a 2011 Honda Pilot, there are two air filters to consider: the engine air filter in a rectangular housing in the engine bay (typically on the passenger side toward the front) and the cabin air filter behind the glove box. Both are user-serviceable with basic tools and periodic replacement helps maintain engine performance and interior air quality. Always consult the owner's manual for your exact maintenance intervals and connector specifics.