Bosch P3611WS Workshop Cabin Air Filter

The Bosch P3611WS Workshop Cabin Air Filter is engineered to deliver cleaner, healthier air inside your vehicle by filtering out harmful airborne contaminants before they enter through the HVAC system. This premium particulate filter features multi-layer media construction that provides an 80% efficiency rate at capturing particles 3 microns or greater, including dust, dirt, pollen, and other environmental pollutants.

Multi-Layer Filtration Technology:

• 1st Layer: Non-woven pre-filter captures larger contaminant particles
• 2nd Layer: Electrostatically charged microfiber layer attracts and holds smaller elusive particles
• 3rd Layer: Non-woven cover layer adds structural stability and protects the microfiber layer from damage while acting as an additional barrier to harmful elements

Key Features:

• High pleat count provides greater surface area for superior filtration capacity
• Foam perimeter gasket or rigid frame (where specified by OE) prevents particles from bypassing the filter media
• Designed to fit 90% of North American vehicles equipped with cabin air filters
• Helps protect HVAC system components from contamination and premature wear

Bosch recommends inspecting cabin air filters at least once per year and following manufacturer-specified replacement intervals. Signs that replacement may be needed include reduced airflow through the HVAC system, unusual odors, or noise from the blower fan. Regular replacement ensures optimal air quality and system performance, particularly important for drivers in high-traffic or dusty environments.