The 2017 Nissan Altima has two air filters: one engine air filter and one cabin air filter.
For drivers, understanding these two filters helps with maintenance and air quality inside the car. The engine air filter protects the engine from dust and debris, while the cabin air filter cleans the air entering the interior through the HVAC system. The rest of this article breaks down what each filter does, where to find them, and how to replace them.
Engine air filter
Engine air filter basics and location in the 2017 Altima; below is a quick guide to what you should know about this filter.
- What it does: Prevents dust, dirt, and debris from entering the engine’s intake, helping maintain performance and efficiency.
- Location: Placed in the engine compartment inside the air intake box; normally on the path of the intake duct.
- Replacement interval: Typical guidance is around 30,000 miles (48,000 km) under normal driving, with more frequent changes in dusty or harsh conditions; always check the owner’s manual for the exact interval.
- Maintenance tips: Inspect for tears or excessive dirt during routine service; replace with the correct Nissan OEM or equivalent filter model.
Keeping the engine air filter clean is important for horsepower and fuel economy, and a clogged filter can cause reduced performance and higher fuel consumption.
Cabin air filter
Cabin air filter cleans the air that enters the interior via the HVAC system, protecting occupants from dust, pollen, and pollutants. Access and replacement are typically straightforward but vary by trim level.
- What it does: Traps dust, pollen, and debris before air is blown into the cabin, improving airflow and interior air quality.
- Location: In the 2017 Altima, the cabin air filter is usually located behind the glove box or under the dashboard on the passenger side; access may require removing a panel or glove box.
- Replacement interval: Common guidance is roughly every 15,000 miles (24,000 km) or about once a year, but conditions (smoke, heavy traffic, allergies) may require more frequent changes. Check the owner’s manual for the exact interval.
- Maintenance tips: Replace with the correct filter orientation; after replacement, ensure the HVAC system is reset if your model requires it.
Regular cabin air filter replacement helps maintain cooling efficiency and reduces odors inside the car.
Summary
In summary, the 2017 Nissan Altima is equipped with two air filters: one engine air filter in the engine intake and one cabin air filter behind the glove box in most configurations. Regular checks and timely replacements keep the engine breathing clean air and the cabin air comfortable for occupants. For the exact replacement intervals and procedure, consult the owner’s manual or a Nissan dealer.