K&N Engineering 57S-2001 BMW 2, 3 and 4 Series N20 Performance Airbox

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. K&N's easy-to-install performance air box replaces the restrictive factory air filter and air intake housing delivering a power gain. This power boosting air intake comes with K&N's No-Hassle Lifetime Limited Warranty. Associated products: RF-5289 Universal Air Filter, 99-5000 Filter Care Service Kit Aerosol

• K&N No-Hassle Lifetime Limited Warranty
• Million Mile Limited Warranty

The K&N Engineering 57S-2001 Performance Airbox is designed for BMW models equipped with the N20 engine. It replaces the restrictive factory air filter and air intake housing with a fully enclosed, injection-molded airbox that helps reduce airflow restriction while smoothing and straightening the air path. Increased airflow can support improved throttle response, acceleration, and usable power throughout the engine’s RPM range.

The enclosed airbox connects to the factory air intake hose and is designed to use the original airbox location for a straightforward installation. Its removable lid provides convenient access to the serviceable air filter when cleaning or maintenance is required. The system is engineered for long-term use and is backed by K&N’s No-Hassle Lifetime Limited Warranty and Million Mile Limited Warranty. The associated RF-5289 Universal Air Filter and 99-5000 Filter Care Service Kit Aerosol may be used for service needs where applicable.

Application coverage includes select 2013–2015 BMW 328i models, 2014–2015 BMW 320i models, 2014–2015 BMW 228i models, and 2014–2016 BMW 428i models with the N20 engine. Confirm vehicle application before ordering. This product is not CARB approved, and a required emissions acknowledgment may apply. EPA status is listed as N/A; verify local emissions requirements before installation or use.

What's Included

• K&N Engineering 57S-2001 performance airbox system
• Installation components required for the airbox application
• Removable airbox lid
• K&N warranty coverage

Features:

• Reduced Airflow Restriction: Replaces the factory air intake housing to help the engine draw in more air.
• Improved Airflow Management: Fully enclosed molded construction helps smooth and straighten airflow entering the engine.
• Performance-Oriented Design: Increased airflow can support stronger throttle response, acceleration, and usable power across the RPM range.
• Serviceable Construction: Removable lid provides convenient access to the air filter for cleaning and maintenance.

Fitments:
2013 BMW 320i Base
2013 BMW 328i Base
2014 BMW 228i Base
2014 BMW 320i Base
2014 BMW 328i Base
2014 BMW 428i Base
2015 BMW 228i Base
2015 BMW 320i Base
2015 BMW 328i Base
2015 BMW 428i Base
2016 BMW 228i Base
2016 BMW 428i Base

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1