Bosch P3740WS Cabin Air Filter

Overview of Bosch Cabin Filter P3740WS

The Bosch Cabin Filter P3740WS is designed to maintain clean air quality inside your vehicle's cabin. Engineered for select Audi and Volkswagen models, this particulate cabin air filter helps reduce airborne contaminants for a healthier driving environment.

• Filter media made of spunbound polyester combined with synthetic meltblow fibers
• OEM standard part ensuring proper fit and function
• Foam automotive material for durability and effective filtration
• Recommended replacement interval of 12,000 miles
• Compatible with Audi and Volkswagen models including A4, Passat, S4, and 90 Quattro

About the Bosch Cabin Filter Product Line

The Bosch Cabin Filter line focuses on delivering reliable particulate filtration solutions for vehicle HVAC systems. This product line emphasizes OEM quality materials and design to meet manufacturer specifications. The P3740WS is part of this line, providing a balance of filtration efficiency and durability without activated carbon or HEPA features.

Product Details and Specifications

The Bosch P3740WS cabin air filter features a multi-layer filter media composed of spunbound polyester and synthetic meltblow fibers, which effectively capture dust, pollen, and other particulate matter. The filter measures approximately 5.83 inches in width and 0.94 inches in height, designed to fit precisely in the HVAC system of compatible Audi and Volkswagen vehicles. Constructed with foam automotive material, this particulate filter does not include an activated carbon pre-filter or HEPA filtration but meets OEM standards for air quality and airflow.

Compatible Vehicles and Applications

• Compatible with Audi models: 90, 90 Quattro, A4, A4 Quattro, Cabriolet, S4
• Compatible with Volkswagen Passat
• Designed for use as a particulate cabin air filter in HVAC systems
• Helps maintain interior air quality by filtering airborne particles

Installation Notes and Tips

When replacing the Bosch P3740WS cabin air filter, ensure the vehicle is parked and the HVAC system is turned off. Locate the cabin air filter housing according to the vehicle’s service manual, typically behind the glove box or under the dashboard. Remove the old filter carefully to avoid releasing trapped dust and debris. Install the new filter with the airflow direction arrow aligned correctly. Regular replacement every 12,000 miles is recommended to maintain optimal air quality and HVAC performance.

Quality Assurance and Warranty

The Bosch Cabin Filter P3740WS is manufactured to meet OEM standards, ensuring compatibility and reliable performance in specified Audi and Volkswagen models. While specific warranty details are not provided, Bosch products typically adhere to strict quality control processes to support durability and function throughout the recommended replacement interval.