Bosch 18117 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Mazda CX-7

The Bosch Engineered Oxygen Sensor 18117 is designed specifically for the Mazda CX-7, providing precise air-fuel mixture readings to optimize engine performance and reduce emissions. This direct fit, heated oxygen sensor ensures accurate data transmission to your vehicle's engine control unit.

• Specific fit for Mazda CX-7 models
• Heated narrow-band oxygen sensor for accurate readings
• Threaded mounting type with 18 mm thread diameter
• Includes 21.7-inch wiring harness with 4 wires and blade terminals
• Durable metal housing with steel finish and 22 mm hex size
• Connector features a square shape with female gender and 4 male terminals
• Overall length of 27 inches for proper installation
• Standard replacement grade for reliable performance

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise emission control components tailored to specific vehicle applications. The 18117 sensor is engineered to meet OEM specifications for the Mazda CX-7, ensuring compatibility and consistent sensor performance. This product line emphasizes durability and accurate sensor feedback to support efficient engine management systems.

Product Details and Specifications

This Bosch oxygen sensor features a heated narrow-band sensor type that helps maintain optimal combustion by monitoring oxygen levels in the exhaust gases. The sensor’s threaded mounting type with an 18 mm thread diameter allows for secure installation. The wiring harness is 21.7 inches long and includes four wires with blade terminals, designed for a specific fit rather than universal application. The connector is square-shaped with female gender and four male terminals, ensuring a proper electrical connection. The sensor housing is made of metal with a steel finish, providing durability under high-temperature conditions. The overall length of the sensor is 27 inches, with a 22 mm hex size for installation tools.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Mazda CX-7 emission control
• Resolves engine performance issues related to faulty oxygen sensors
• Helps reduce exhaust emissions and improve fuel efficiency
• Prevents check engine light triggers caused by sensor failure
• Supports proper engine management system operation

Installation Notes and Tips

Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use a 22 mm oxygen sensor socket or wrench for removal and installation. Verify the wiring harness length and connector type match the original sensor to avoid electrical issues. The threaded mounting requires proper torque to prevent exhaust leaks. This sensor is a direct fit for the Mazda CX-7, so no modifications are necessary.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 18117 is manufactured to meet OEM standards for fit, form, and function. It is constructed with high-quality materials including a metal housing and heated sensor element to ensure long service life. While specific warranty details are not provided, Bosch products typically come with a limited warranty covering defects in materials and workmanship.