Your BMW has two air filters on board. They serve the same general purpose as do your oil filter and fuel filter. That purpose? To keep airborne contaminants and debris from getting into vital parts and systems.

All About Your Air Filters

The first air filter is the engine air filter. It sits near the air intake, and serves to trap those pollutants before they can sneak into your engine. If they were to make it into the motor, they'd collect and form carbon deposits that restrict the air flow your engine needs for combustion.

The other is your cabin air filter. It's generally located behind your glove compartment, though it may be underneath the front cowling on the passenger side of your car or SAV. It prevents allergens and other irritants from getting into the ductwork and escaping through the air vents into the air that you and your passengers breathe.

How to Spot Bad Air Filters

However, air filters aren't designed to last forever. While they will degrade with age, they're much likelier to get clogged up with particulates. When that happens, airflow is impeded. Signs of trouble include:

Engine misfires
Reduced engine horsepower
Strange noises from under your hood
You can't maintain a consistent cabin air temperature
The cabin smells musty
You notice a whistling sound coming from the air vents

Buy Genuine BMW Air Filters Online

To avoid problems, consult your owner's manual for your recommended maintenance schedule. When you do need to replace yours, get the ones that are best for your vehicle. That means choosing real-deal BMW air filters, since they're designed specifically for your model. That ensures the precise fit you need for maximum protection. Our online auto parts center has a great selection in stock and ready to ship, so buy now to save both time and money!