Mann Filter cabin air filter CUK 31 003 - Activated carbon pollen filter for Audi/Porsche, OE fit and high particle capture

MANN-FILTER CUK 31 003 is an OE-quality activated-carbon cabin air filter that blocks dust, pollen and many odorous gases to keep your car's interior cleaner and fresher.

The MANN-FILTER CUK 31 003 cabin filter is a dual-layer, activated-carbon pollen filter engineered to meet original-equipment performance for select Audi and Porsche models. It captures fine particles and reduces airborne odors and gaseous pollutants, helping preserve air quality inside the passenger compartment between service intervals. Designed for straightforward replacement, this filter follows the manufacturer guidance of replacing roughly every 12 months or 12,000 miles, depending on driving conditions.

How effectively does this filter remove particles and allergens?

The CUK 31 003 uses a dual-layer media to separate particulates and a carbon layer to adsorb gases. Its particle separation performance is engineered to remove nearly all particles larger than 1 μm, which covers common pollen, soot and many dust particles.

• Dual-layer media for high particle capture efficiency
• Approximately 100% separation of particles > 1 μm under standard test conditions
• Helps reduce visible dust and pollen entering the cabin

What pollutants and odors does the activated carbon layer target?

The activated-carbon layer is formulated to adsorb a range of odorous and gaseous contaminants such as ozone, nitrogen oxides and sulfur dioxide. While not a substitute for specialized medical devices, the carbon layer reduces many common smells and urban traffic-related gases that can enter through the HVAC intake.

• Adsorbs odorous gases for a fresher cabin environment
• Helps minimize typical road and exhaust odors
• Works throughout the recommended service interval for consistent performance

How simple is installation and when should I replace it?

MANN-FILTER builds these cabin filters to match OE form factors, so installation is typically straightforward and intended for quick replacement during routine maintenance. Replace the filter about every 12 months or 12,000 miles, or sooner in dusty, high-pollen or heavy-traffic environments to maintain airflow and filtration performance.

• OE-quality fit for select Audi and Porsche models
• Quick swap design for easy DIY or shop service
• Recommended replacement: ~12 months / 12,000 miles depending on conditions

Will this filter affect HVAC airflow or noise?

The filter is engineered to balance particle capture with minimal impact on airflow and cabin noise, matching original equipment specifications. Properly installed, it maintains comfortable ventilation performance while reducing dust and odor ingress.

• Designed for minimal airflow restriction when clean
• Helps prevent dirt buildup in HVAC components, supporting quieter operation
• Follow replacement intervals to avoid clogging and reduced airflow

Who is this for: Drivers of compatible Audi and Porsche vehicles who want OE-quality cabin filtration that combines reliable particle removal with activated-carbon odor control. It suits owners who replace cabin filters on schedule or those frequently driving in urban, high-traffic or pollen-prone areas and who prefer a straightforward, OEM-matching part for maintenance.