Air filters stop dust and dirt from entering the engine and your vehicle's interior cabin; each should be replaced at least annually or every 12,000 miles.
Air Filter Replacement
The
air filter cleans the air that your engine breathes by filtering out
dirt and other contaminants before the air mixes with fuel on its way to
the engine. This is an important service if your filter is dirty.
Cabin Air Filter Replacement
The
cabin air filter cleans the air that you and your passengers breathe by
filtering out dirt and other contaminants. This is a suggested
service, if yours is dirty, or has debris clogging the filter.