Bosch C3947WS Cabin Air Filter

Bosch C3947WS Cabin Filter Overview

The Bosch C3947WS cabin air filter is an activated carbon HVAC filter built for vehicles that need cleaner interior air and reduced odor intrusion. It uses a 5-layer design with an added carbon layer and protective cover layer to help manage outside contaminants before they enter the cabin.

Compatible With 2007-2017 GMC Acadia, 2008-2017 Buick Enclave, 2009-2017 Chevrolet Traverse, 2017 GMC Acadia Limited, and 2007-2010 Saturn Outlook. The Bosch Cabin Filter, Activated Carbon line is focused on OE-standard cabin filtration for everyday driving conditions.

Key Features

• Activated charcoal filter media for odor control
• 5-layer construction for multi-stage cabin air filtration
• Additional carbon layer to absorb ozone, nitrogen oxides, sulfur dioxide, and hydrocarbons
• Foam-based automotive material
• OE standard part classification for factory-style fit and function
• HEPA filter: No

Detailed Product Description

Bosch C3947WS is a charcoal cabin air filter designed to help keep the HVAC intake air cleaner in Buick Enclave, Chevrolet Traverse, GMC Acadia, GMC Acadia Limited, and Saturn Outlook applications. The activated carbon pre-filter targets common exterior odors and gaseous pollutants, while the layered filter media adds another level of protection for the passenger compartment. This makes it a practical choice for drivers who want a direct replacement cabin filter for routine HVAC service.

As part of the Bosch Cabin Filter, Activated Carbon product line, this filter is positioned as an OE-standard replacement for vehicles that use a charcoal-style cabin filter. Search terms such as Bosch C3947WS cabin air filter for 2008-2017 Buick Enclave or Bosch C3947WS cabin filter for 2009-2017 Chevrolet Traverse align with this application.

What It Helps Address

• Unwanted odors entering the cabin through the HVAC system
• Dust and airborne debris drawn into the passenger compartment
• Reduced air freshness during heating and air conditioning use
• Routine cabin filter replacement needs on GM crossover platforms
• Passenger comfort concerns related to outside air quality

Installation Notes and Tips

Replace the cabin filter according to the vehicle service schedule or sooner if airflow drops or odors become noticeable. Verify the filter orientation and housing access point before installation, since cabin filter locations vary by platform. For best results, inspect the HVAC intake area and replace the filter during regular climate-control maintenance.

Quality Assurance

Bosch designs this cabin filter as an OE-standard part for the listed applications, with a 5-layer activated carbon construction intended to support consistent cabin air filtration performance.