Bosch C3741WS Cabin Air Filter

Bosch Cabin Filter for BMW 740i and 750iL

Bosch C3741WS is an activated carbon cabin air filter built for select BMW 740i, 740iL, and 750iL applications. It uses a multi-layer design to help reduce outside odors and airborne contaminants entering the HVAC system, supporting cleaner air inside the vehicle.

Key Features

• Activated charcoal filter media for odor reduction
• 5-layer cabin filter construction with an added carbon layer
• Additional cover layer for extra filtration protection
• OEM standard part design
• Fits fresh air cabin filter and blower applications listed below
• Recommended replacement interval: 12,000 miles

Product Details

The Bosch Cabin Filter, Activated Carbon line is engineered for drivers who want a cabin air filter with added odor control. Bosch C3741WS uses activated charcoal to absorb gases and odors such as ozone, nitrogen oxide, sulfur dioxide, and hydrocarbons. For BMW 740i, BMW 740iL, and BMW 750iL models, this filter supports the HVAC system by helping keep incoming air cleaner as it passes through the cabin intake path. Bosch C3741WS is an OEM standard part previously cataloged as C3741.

This part cross-references common OE-style replacement needs for the same application and is listed for select BMW 740i, 740iL, and 750iL fitments.

What It Helps Address

• Unwanted cabin odors from outside air
• Dust and airborne debris entering the HVAC system
• Reduced air quality through the fresh air intake
• Build-up of contaminants in the cabin filter housing
• Maintenance intervals tied to clogged or aged cabin filters

Installation Notes and Tips

Verify the vehicle year, model, and HVAC application before ordering. Fits 1995 BMW 740i, N/A; Fits 1997-2001 BMW 740i, N/A; Fits 1995 BMW 740i, N/A, For blower; Fits 1997-2001 BMW 740i, N/A, For blower; Fits 1995-2001 BMW 740iL, N/A; Fits 1995-2001 BMW 740iL, N/A, For blower; Fits 1995-2001 BMW 750iL, N/A; Fits 1995-2001 BMW 750iL, N/A, For blower. Replace the cabin filter at the recommended interval or sooner if airflow drops or odors increase. Confirm the filter orientation and housing condition during service.

Quality Assurance

Bosch is a recognized OE-focused automotive brand, and the C3741WS cabin filter is built to OEM standard specifications for the listed BMW applications. The activated carbon construction and multi-layer media are designed to provide consistent filtration performance in the HVAC system.