Bosch 13970 Oxygen Sensor

Reliable Oxygen Sensor for Mazda MPV, MX-3, and Protege

The Bosch Validated Oxygen Sensor 13970 is designed specifically for select Mazda models, including the MPV, MX-3, and Protege. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by monitoring exhaust gases precisely.

• Specific fit for Mazda MPV, MX-3, and Protege models
• Narrow-band heated oxygen sensor for precise air-fuel mixture readings
• 7.1-inch wiring harness length with 4-pin rectangular female connector
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with included wiring harness

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering reliable emission control components that meet or exceed OEM specifications. The 13970 sensor is engineered to provide consistent performance and durability, making it a suitable replacement part for maintaining factory-level emission standards on compatible Mazda vehicles.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate exhaust gas readings. The sensor includes a 7.1-inch wiring harness with four wires and a female rectangular connector, ensuring a secure and specific fit. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for straightforward installation. Constructed with a metal housing finished in steel, this sensor weighs approximately 0.198 pounds and measures 10.8 inches overall length, with 9.6 inches from the sealing surface to the end of the connector.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio monitoring for Mazda MPV, MX-3, and Protege
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring accurate exhaust gas measurement
• Prevents check engine light triggers caused by sensor failure
• Supports efficient fuel consumption and engine operation

Installation Notes and Tips

When installing the Bosch 13970 oxygen sensor, ensure the vehicle is compatible with this specific fit sensor for Mazda MPV, MX-3, and Protege models. Use a 22 mm wrench or socket for mounting and avoid over-tightening the threaded sensor to prevent damage. Verify the wiring harness connection is secure with the female rectangular connector and four-pin terminals. It is recommended to inspect the sensor wiring and connector for any signs of wear or corrosion before installation.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 13970 is manufactured to meet OEM standards for emission control sensors. Bosch provides quality assurance through rigorous testing to ensure durability and reliable performance. Please refer to Bosch’s official warranty policy for specific coverage details related to this oxygen sensor.