The engine air filter is located inside a rectangular plastic air box in the engine bay, typically on the passenger side near the fender. It’s accessed by unclipping or unscrewing the box cover and replacing the filter inside. This is separate from the cabin air filter, which sits behind the glove box.
In this article, we outline exactly where to locate the engine air box in a 2017 Civic, how to open it, and how to determine when it needs replacement. The guidance applies to the common 1.5-liter turbo and 2.0-liter engines used in this generation.
Where to locate the air box in the engine bay
Look for a large rectangular black plastic housing near the front of the engine bay on the passenger side, connected to a wide intake tube that leads toward the throttle body. The lid is secured with clips or small screws, making access straightforward for a routine inspection or replacement.
What you’ll see inside
Inside the box is the engine air filter. The filter is typically flat and square or rectangular, designed to sit snugly in the bottom of the housing with the lid sealing around the edges when closed.
To locate and inspect or replace the air filter, follow these steps:
- Open the hood and locate the rectangular air box on the passenger side of the engine bay, near the fender and the intake tube.
- Unclip or unscrew the lid to lift the cover and expose the filter.
- Remove the old filter and check for dirt, tears, or excessive clogging. Replace if dirty or damaged.
- Insert a new filter in the same orientation as the old one, ensuring the airflow arrow points toward the engine.
- Reattach the lid and secure the clips or screws firmly. Close the hood and start the engine to verify there are no leaks or loose connections.
Regular inspection and timely replacement keep the Civic’s intake healthy, maintaining performance and fuel efficiency in varying driving conditions.
Additional notes
Remember: the cabin air filter is a separate component located behind the glove box and is not the same as the engine air filter. If you’re unsure about the service interval, consult the owner’s manual or contact a Honda service professional for guidance.
Summary
The engine air filter in a 2017 Honda Civic is housed in a rectangular plastic air box in the engine bay, typically on the passenger side. Access by removing the lid with clips, replace the filter in the correct orientation, and reseal. This is distinct from the cabin air filter, which sits behind the glove box. Regular checks every 15,000–30,000 miles (or as recommended by Honda) help preserve performance and efficiency.