Bosch P3952WS Workshop Particulate Cabin Air Filter

The Bosch P3952WS Workshop Cabin Air Filter is designed to clean the air entering your vehicle's heating, ventilation, and air conditioning (HVAC) system, ensuring you breathe fresher, cleaner air inside your cabin.

Advanced Three-Layer Filtration Technology:

• First Layer: Non-woven pre-filter layer captures larger particles such as dirt and debris
• Second Layer: Electrostatically charged microfiber layer attracts and holds elusive smaller particles down to 3 microns
• Third Layer: Non-woven cover layer adds stability to protect the microfiber layer from damage and acts as an additional barrier to harmful environmental elements

Performance Features:

• 99% filtration efficiency at 3 microns or greater, effectively capturing dirt, dust, pollen, and other environmental contaminants
• High pleat count provides greater surface area for superior filtration capacity and longer service life
• Foam perimeter gasket or rigid frame (where specified by OE) prevents harmful particles from bypassing the filter media
• Precise fit designed to meet or exceed OE specifications

Maintenance Recommendations: Bosch recommends inspecting cabin air filters at least once a year and following manufacturer-specified replacement intervals. Replace more frequently if you drive in heavy traffic or dusty conditions. Signs that replacement is needed include reduced airflow through your HVAC system or unusual noise from the cabin fan.