Bosch 13439 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Volkswagen Passat

The Bosch Actual OE Oxygen Sensor 13439 is designed specifically for Volkswagen Passat models, ensuring precise emission control and optimal engine performance. This narrow-band heated oxygen sensor provides accurate air-fuel mixture readings to help maintain efficient combustion and reduce harmful emissions.

• Specific fit for Volkswagen Passat vehicles
• Heated narrow-band oxygen sensor for fast response
• Threaded mounting type with 18 mm thread diameter
• 21.9-inch wiring harness length with 4-wire configuration
• Durable metal housing with steel finish
• Blade terminal type with rectangular male connector
• Overall length of 25.6 inches for proper installation

About the Bosch Actual OE Oxygen Sensor Line

The Bosch Actual OE Oxygen Sensor product line is engineered to meet original equipment specifications, providing reliable replacement parts that maintain factory performance standards. This line focuses on delivering sensors with precise fitment and consistent operation, making it suitable for Volkswagen Passat owners seeking a direct replacement part that supports emission control systems effectively.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type, which allows for quicker sensor warm-up and improved accuracy in measuring oxygen levels in the exhaust gases. The sensor includes a 4-wire configuration with blade terminals and a rectangular male connector, ensuring secure electrical connections. The threaded mounting type with an 18 mm thread diameter and 22 mm hex size allows for straightforward installation using standard tools. The wiring harness length of 21.9 inches and overall length of 25.6 inches provide sufficient reach for proper placement within the exhaust system. Constructed with a metal housing and steel finish, this sensor is built to withstand harsh operating conditions.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for Volkswagen Passat
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring proper combustion control
• Prevents check engine light triggers caused by sensor failure
• Improves fuel efficiency by maintaining optimal sensor feedback

Installation Notes and Tips

When installing the Bosch 13439 oxygen sensor, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness length and connector type match the vehicle’s factory specifications. Avoid damaging the sensor’s wiring during installation and confirm the threaded mounting is securely tightened to prevent exhaust leaks.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The Actual OE Oxygen Sensor line is designed to match original equipment specifications for Volkswagen Passat models. While specific warranty details are not provided here, Bosch typically offers coverage against manufacturing defects, supporting long-term use and customer confidence.