Bosch C3601WS Cabin Air Filter

Bosch Cabin Filter for Audi HVAC Systems

The Bosch C3601WS cabin air filter is an OEM-standard replacement built for Audi HVAC systems that need cleaner interior air and odor control. Its activated charcoal media and multi-layer construction help reduce common airborne contaminants entering the cabin.

Designed for select Audi R8, A6, A6 Quattro, and S6 applications, this Bosch Cabin Filter, Activated Carbon supports a cleaner passenger environment with a fitment-focused OE-style design.

Key Features

• Activated charcoal filter media for odor reduction
• 5-layer construction with an added carbon layer and protective cover layer
• OEM standard part for direct replacement service
• Helps absorb ozone, nitrogen oxide, sulfur dioxide, and hydrocarbons
• Recommended replacement interval: 12,000 miles
• Previously cataloged as Bosch C3601

Product Details

Bosch Cabin Filter, Activated Carbon C3601WS is engineered for cabin filtration in vehicles equipped with HVAC systems that rely on a charcoal-style filter. The activated carbon pre-filter helps control odors while the layered media supports filtration of outside air before it enters the passenger compartment. This part number, C3601WS, is a practical OE-style choice for drivers searching for a Bosch cabin air filter for Audi A6, Audi A6 Quattro, Audi S6, or Audi R8 applications.

Compatible With select 2005-2015 Audi models, including 2005-2011 Audi A6 Quattro, 2006-2011 Audi A6, 2007-2011 Audi S6, 2008-2012 Audi R8, and 2014-2015 Audi R8. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Unwanted cabin odors from outside air
• Dust and airborne debris entering the HVAC system
• Reduced air quality inside the passenger compartment
• Odor-causing gases such as ozone and sulfur compounds
• Routine maintenance needs tied to clogged cabin filters

Installation Notes and Tips

Replace the cabin filter at the interval recommended for your vehicle or sooner if airflow drops or odors increase. Verify the vehicle year, make, and model against the fitment list before ordering. For best HVAC performance, inspect the filter housing and surrounding area during service and install the filter in the correct airflow direction if marked on the part.

Quality Assurance

Bosch cabin filters are built as OEM-standard replacement parts with a multi-layer design intended for consistent cabin air filtration performance. The C3601WS part number is listed for specific Audi fitments, including Audi R8, Audi A6, Audi A6 Quattro, and Audi S6 applications.