Two air filters, typically: one engine air filter and one cabin air filter. Across current Outback generations, these two filters cover the engine’s air intake and the air that circulates inside the cabin. This article explains what they are, where to find them, and how replacement intervals work.
What filters does the Outback have?
The Subaru Outback typically uses two air filters that handle different parts of the system: the engine intake and the passenger cabin.
- Engine air filter
- Cabin air filter
Engine air filters protect the engine from dust and debris; cabin air filters clean the air brought into the passenger compartment, helping with odors and allergens.
Engine air filter
The engine air filter sits in the engine bay inside the air intake housing (the airbox). It is accessible by opening the airbox lid and removing the old filter for replacement. Typical replacement intervals are around 30,000 miles or as recommended in your owner's manual, though driving in dusty or harsh environments may require more frequent service.
Cabin air filter
The cabin air filter is usually located behind the glove box or under the dash, depending on the model year. Replacing it is commonly simpler than the engine filter, and intervals are often in the 15,000–30,000 mile range, again depending on usage and environment. Signs of a clogged cabin filter include reduced airflow, musty odors, or noticeable allergy symptoms.
Where are they located and how do you replace them?
Knowing where to find each filter helps plan maintenance and DIY replacements. The engine filter is accessed from the engine bay; the cabin filter typically requires partially lowering or removing a panel behind the glove box.
- Engine air filter access: front/top of the engine bay in the air intake box.
- Cabin air filter access: behind the glove box or under the passenger side dash panel.
Always consult your specific model year manual for step-by-step instructions, and replace filters using the correct size and type recommended by Subaru.
Summary
In short, a Subaru Outback uses two air filters: one for the engine and one for the cabin. Regular inspection and replacement at manufacturer-recommended intervals help maintain engine performance and interior air quality. If you drive in dusty or polluted environments, plan for more frequent changes, and refer to your owner’s manual for year-specific guidance.