Wix WA11399 Engine Air Filter

Engine Air Filter for BMW and Mini

The Wix WA11399 is a panel-style engine air filter built for BMW and Mini applications that need dependable intake filtration in everyday driving and harsher conditions. It is sized for the listed fitments and uses enhanced cellulose media for strong dust capture and moisture resistance.

Key Features

• Panel-style engine air filter for the listed BMW and Mini applications
• Phenolic resin treated cellulose media for durability in humid conditions
• 30% more media than OES filters for increased filtering surface area
• High-tear strength polyurethane seal on applicable designs
• Laboratory tested to ISO 5011 standards with at least 99.5% efficiency based on Wix 42389

Detailed Description

Wix WA11399 is an engine air filter designed for normal and severe driving conditions, including stop-and-go traffic, dirt roads, construction zones, short trips, and highway use. The panel construction and cellulose media help maintain airflow while capturing airborne contaminants before they reach the engine. This part cross-references 201399 and A31798 for the same application. The WA11399 is a direct fit for select BMW X2, BMW M235i xDrive Gran Coupe, BMW M235 xDrive Gran Coupe, BMW M135i, Mini Cooper, Mini Cooper Clubman, and Mini Cooper Countryman applications.

What It Helps Address

• Restricted airflow caused by a dirty or clogged engine air filter
• Reduced filtration performance from worn filter media
• Moisture-related filter breakdown in demanding conditions
• Dust and debris entering the intake system
• Maintenance replacement at OEM air filter change intervals

Installation Notes and Tips

Verify the filter dimensions and match the listed vehicle application before installation. The WA11399 is a panel air filter, so it should be installed in the factory airbox according to the vehicle service procedure. Confirm the correct fitment for your BMW or Mini model using the year and model listing before ordering.

Quality Assurance

Wix recommends this filter for OEM air filter change intervals. The WA11399 uses enhanced cellulose media with phenolic resin treatment and has been laboratory tested to ISO 5011 standards for filtration efficiency.