Bosch C3929WS Cabin Air Filter

Bosch Cabin Filter for Cleaner Interior Air

The Bosch C3929WS cabin air filter is an OEM-standard replacement built for vehicles that need dependable HVAC filtration and odor control. Its activated carbon media helps reduce outside contaminants entering the cabin, supporting cleaner air for daily driving in Buick, Chevrolet, Cadillac, and Saab applications.

Compatible With 2010-2022 Buick Encore, Chevrolet Trax, Chevrolet Spark, Buick Cascada, Chevrolet Sonic, Buick Regal, Buick Verano, Buick LaCrosse, Cadillac ELR, Cadillac SRX, Chevrolet Malibu Limited, Chevrolet Spark EV, Chevrolet Cruze, Chevrolet Malibu, Chevrolet Volt, Saab 9-5, and Buick Allure applications.

• Activated charcoal filter media for cabin air filtration
• 5-layer design with an added carbon layer for odor reduction
• Helps absorb ozone, nitrogen oxides, sulfur dioxide, and hydrocarbons
• Foam construction with an additional cover layer for added protection
• OEM standard part for direct replacement service
• Part number C3929WS for catalog and service matching

Product Line Details

Bosch Cabin Filter, Activated Carbon is part of Bosch’s cabin filtration line focused on multi-layer protection. This design uses activated carbon to address common exhaust-related odors and airborne gases while maintaining the filtration needs of the vehicle’s HVAC system. The C3929WS is a practical choice for drivers looking for a cabin air filter replacement that aligns with OE-style service expectations.

Fitment Details

• Fits 2013-2022 Buick Encore, N/A
• Fits 2013-2022 Chevrolet Trax, N/A
• Fits 2013-2020 Chevrolet Spark, N/A
• Fits 2016-2019 Buick Cascada, N/A
• Fits 2012-2018 Chevrolet Sonic, N/A
• Fits 2011-2017 Buick Regal, N/A
• Fits 2012-2017 Buick Verano, N/A
• Fits 2010-2016 Buick LaCrosse, N/A
• Fits 2014-2016 Cadillac ELR, N/A
• Fits 2010-2016 Cadillac SRX, N/A
• Fits 2016 Chevrolet Malibu Limited, N/A
• Fits 2014-2016 Chevrolet Spark EV, N/A
• Fits 2011-2015 Chevrolet Cruze, N/A
• Fits 2013-2015 Chevrolet Malibu, N/A
• Fits 2011-2015 Chevrolet Volt, N/A
• Fits 2010-2011 Saab 9-5, N/A
• Fits 2010 Buick Allure, N/A

What This Filter Helps Address

• Dust and airborne debris entering the HVAC system
• Odors from traffic, exhaust, and outside air
• Reduced cabin air quality during city or highway driving
• HVAC filtration wear from extended service intervals
• Interior air concerns in Buick Encore and Chevrolet Cruze cabin filter applications

Installation Notes and Tips

Replace the cabin air filter according to the vehicle service schedule or sooner if airflow drops or odors increase. Verify the Bosch C3929WS against the vehicle’s HVAC filter location before installation, and inspect the filter housing for debris before fitting the new filter. This part cross-references OE-style applications for the same service use.

Quality Assurance

Bosch designs this cabin filter as an OEM-standard replacement with activated carbon filtration and multi-layer construction. The part number C3929WS is listed for direct catalog matching across supported Buick, Chevrolet, Cadillac, and Saab applications.