Bosch C3741WS Workshop Activated Charcoal Cabin Air Filter

The Bosch C3741WS Workshop Activated Charcoal Cabin Air Filter provides superior air quality protection for your vehicle's HVAC system. This premium cabin filter is specifically engineered to capture harmful particles while simultaneously eliminating odors and toxic gases from entering your vehicle's cabin.

Advanced 5-Layer Filtration Technology:

• 1st Layer: Non-woven pre-filter captures larger particles and debris
• 2nd Layer: Electrostatically charged microfiber layer attracts and holds smaller elusive particles
• 3rd & 4th Layers: Non-woven cover layers add structural stability and protect the microfiber layer from damage
• 5th Layer: Activated charcoal layer 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 capturing dirt, dust, pollen, and other environmental contaminants
• Activated carbon technology eliminates odors and reduces windshield hazing
• High pleat count provides greater surface area for maximum filtration capacity
• Engineered to fit 90% of North American vehicles equipped with cabin air filters
• Helps maintain optimal HVAC system performance and airflow

Bosch recommends inspecting cabin air filters at least once per year and replacing them at manufacturer-specified intervals. Signs that replacement may be needed include reduced airflow through the HVAC system or unusual noise from the blower fan.