BMW Airboxes

The K&N Performance Airbox is designed to dramatically reduce air flow restriction as well as smooth and straighten air flow. Replacing the restrictive factory air filter and air box allows your engine to inhale more air than with the factory air filter assembly. More air means more usable power and acceleration throughout the engine’s RPM range. A fully enclosed injection molded air box connects to the factory air intake hose. The removable lid provides easy access to the filter when cleaning is required. This performance air box is relatively easy to install. The required tools are commonly available and it uses the previous air box space. These air box systems are built to last for the life of your vehicle and they’re backed by K&N’s No-Hassle Lifetime Limited Warranty. Some K&N 57S Series Performance Airboxes are compliant with the latest TUV emissions and sound regulations. Check the K&N catalog or website for vehicle applications and specific TUV status for each vehicle and air intake.

Product Features:

• Increases horsepower
• Designed to improve torque and acceleration
• Replaces entire factory air box and air filter system
• Washable and reusable lifetime air filter
• Easy to install, usually in 60 minutes or less
• K&N No-Hassle Lifetime Limited Warranty

This Performance Air Intake System allows your engine to breathe more air compared to the restrictive factory air intake housing. It is designed, tuned And dyno-tested to produce more horsepower And torque. Air enters the system from the factory fresh air inlets. through replacement air duct And into a roto-molded, aerodynamic AEM air box containing an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration And performance.The cone shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). This Air Intake System is backed by AEM’s Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California And other states adopting California emission standards, while others are 50 state legal. View the vehicle applications to determine the legal status for each vehicle.