Bosch C3789WS Activated Charcoal Cabin Air Filter

The Bosch C3789WS Workshop Cabin Air Filter features advanced activated charcoal technology to provide superior air quality inside your vehicle. This premium cabin filter is engineered with a sophisticated 5-layer design that delivers exceptional filtration performance while eliminating unpleasant odors and harmful gases.

Advanced 5-Layer Filtration System:

• 1st Layer: Non-woven pre-filter captures larger particles like dust and debris
• 2nd Layer: Electrostatically charged microfiber layer attracts and traps elusive smaller particles
• 3rd & 4th Layers: Non-woven cover layers provide structural stability and act as additional barriers to harmful contaminants
• 5th Layer: Activated charcoal absorbs toxic and foul-smelling gases including ozone, nitrogen oxide, sulfur dioxide, and hydrocarbons

Key Features:

• 99% filtration efficiency at 3 microns or greater for superior particle capture
• Activated charcoal layer eliminates odors and reduces windshield hazing
• High pleat count provides greater surface area for increased filtration capacity
• Helps maintain optimal HVAC system performance and airflow
• Improves interior air quality for a healthier, more comfortable cabin environment

Bosch recommends inspecting cabin air filters at least once a year and replacing them at manufacturer-specified intervals. More frequent replacement may be necessary if you drive in heavy traffic or dusty conditions. Signs that your cabin filter needs replacement include reduced airflow through your HVAC system or unusual noise from the blower fan.