Bosch 13951 Oxygen Sensor - Downstream

Overview of Bosch Actual OE Oxygen Sensor 13951

The Bosch Actual OE Oxygen Sensor 13951 is designed specifically for BMW M3, Z3, and Z4 models. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by monitoring exhaust gases precisely.

• Specific fit for BMW M3, Z3, and Z4 models
• Heated narrow-band oxygen sensor for reliable readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 33.1-inch wiring harness with 4-pin female connectors
• Durable metal housing finished in steel for long-lasting use

About the Bosch Actual OE Oxygen Sensor Product Line

The Bosch Actual OE Oxygen Sensor line is engineered to meet original equipment specifications, providing a direct replacement for factory-installed sensors. This product line focuses on delivering precise sensor performance and compatibility, ensuring that the oxygen sensor integrates seamlessly with the vehicle’s emission control system. The 13951 sensor maintains the standards expected from Bosch’s OE-quality parts.

Detailed Product Description and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate air-fuel mixture readings. The sensor has a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for easy installation. The wiring harness is 33.1 inches long and includes four wires with female pin terminals and a round connector shape, ensuring a secure and reliable electrical connection. The sensor’s metal housing finished in steel provides durability against harsh engine conditions. Overall length measures 36.8 inches, with a sealing surface to connector length of 35.6 inches, making it suitable for the specified BMW models.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for BMW M3, Z3, and Z4 emission systems
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring proper air-fuel mixture control
• Prevents check engine light triggers caused by sensor failure
• Improves fuel efficiency by providing precise exhaust gas data

Installation Notes and Tips

When installing the Bosch 13951 oxygen sensor, ensure the engine 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. Thread the sensor carefully to avoid cross-threading, and tighten to the manufacturer’s torque specifications. No mounting bracket is included, so use the existing mounting point on the vehicle.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards and are designed for durability and reliable performance. The Actual OE Oxygen Sensor 13951 is a standard replacement part that undergoes rigorous testing to ensure compatibility and function. While specific warranty details are not provided here, Bosch typically offers limited warranties on their emission control sensors to cover defects in materials and workmanship.