Corteco 49408801 micronAir Cabin Air Filter OEM Replacement - 4H0819439

The Corteco 49408801 is a micronAir® cabin air filter (also known as a pollen filter or passenger compartment air filter) engineered as a direct replacement for Audi OEM part number 4H0819439. Manufactured by Corteco — the aftermarket distribution arm of the Freudenberg Group, the original inventors of the cabin air filter — this filter delivers genuine OE-equivalent fitment and filtration performance.

Key Features:

• Direct replacement for Audi OEM part 4H0819439
• Filters pollen, fine dust, soot, and PM2.5 particles (<2.5 µm) to protect cabin air quality
• Helps prevent window fogging by maintaining proper airflow through the HVAC system
• Extends the service life of your vehicle's air conditioning and ventilation system
• Manufactured to OE specifications by Freudenberg — the same supplier that equips nearly one in two new cars worldwide with cabin filtration
• Includes detailed installation instructions for fast, straightforward replacement

Corteco's micronAir® cabin air filters are produced using proprietary non-woven filter media manufactured in-house by Freudenberg, combining electrostatic and mechanical filtration for superior particle capture. This aftermarket filter meets the exact size and specification of the original Audi part, ensuring a precise fit with no modifications required. Replace your cabin air filter regularly — typically every 12 months or 15,000 miles — to maintain clean, fresh air inside the passenger compartment and keep your HVAC system running efficiently.