Your engine needs to breathe in order to function its best. That's why you have a BMW 540i air filter. The 540i air filter is located near the top of your engine, where it serves as a barrier against dust, grit, and engine grime that may make its way into your car's combustion chambers.

Clean air is an essential requirement for a healthy combustion cycle, and your BMW 540i air filter is there to make sure your engine gets the air it needs. Many people don't think about replacing their 540i air filter until there is a problem with the engine, and sometimes do not even realize that a clogged or dirty BMW 540i air filter can be responsible for sluggish performance, a drop in gas mileage, or a hot running engine.

Since your 540i air filter is simply a paper fiber filter in a cardboard frame, it may be hard to believe this part can cause so many problems. It is a good practice to replace your BMW 540i air filter at least once per year. However, you may need to replace your 540i air filter more frequently, particularly if you live in a dusty climate or tend to put a lot of miles on your car. One solution to the problem of a clogged BMW 540i air filter is to invest in a high performance filter. Not only will a high performance 540i air filter improve air flow in your engine and give you more horsepower and torque, it will also last far longer than a stock BMW 540i air filter. Most high performance 540i air filters are washable and reusable, so one of them will last you for several years.You'll find a full line of BMW 540i air filters and performance air filters in our extensive online catalogue.