Bosch P3942WS Workshop Cabin Air Filter

The Bosch P3942WS Workshop Cabin Air Filter is engineered to provide clean, filtered air to your vehicle's heating, ventilation, and air conditioning (HVAC) system. This particulate filter features advanced multi-layer media construction that delivers up to 99% efficiency at capturing particles 3 microns or larger, including dirt, dust, pollen, and other environmental contaminants before they enter your vehicle's cabin.

Multi-Layer Filtration Technology:

• First Layer: Non-woven pre-filter layer captures larger particles and debris
• Second Layer: Electrostatically charged microfiber layer attracts and holds smaller elusive particles
• Third Layer: Non-woven cover layer adds stability to protect the microfiber layer from damage and provides an additional barrier against harmful elements

Key Features:

• High pleat count provides greater surface area for enhanced filtration capacity
• Foam perimeter gasket or rigid frame included where specified by OE design
• Helps reduce odors and prevents windshield hazing
• Easy installation, typically located behind the glove compartment
• Meets OEM specifications for quality and performance

This Bosch Workshop Cabin Air Filter measures 7.4" x 8.3" x 1.3" and replaces OEM part number 68096453AB. Bosch recommends inspecting cabin air filters at least once a year and replacing them according to manufacturer-specified intervals, or more frequently if you drive in heavy traffic or dusty conditions. Signs that you may need a replacement include reduced airflow through your HVAC system or unusual noise from the fan.