Bosch 15170 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Saab and Subaru Vehicles

The Bosch Validated Oxygen Sensor 15170 is designed specifically for select Saab and Subaru models, including the 9-2X, Forester, Impreza, Legacy, and Outback. This narrow-band heated oxygen sensor ensures accurate emissions control and optimal engine performance.

• Specific fit for Saab 9-2X and Subaru Forester, Impreza, Legacy, Outback
• Heated narrow-band oxygen sensor for precise air-fuel mixture readings
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 4-wire harness with an 18.3-inch wiring harness length and male rectangular connector
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade with a total length of 22 inches

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that meet strict quality and performance standards. These sensors are engineered to provide reliable emissions control and compatibility with specific vehicle applications. The 15170 part number is part of this line, ensuring it meets Bosch’s validation criteria for fitment and function on Saab and Subaru models.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band sensor type with heating capability to quickly reach operating temperature, improving sensor response time and emissions accuracy. The sensor uses a threaded mounting type with an 18 mm thread diameter and a 22 mm hex size for installation. It comes with a 4-wire harness and a male rectangular connector, designed for a specific fit rather than universal application. The wiring harness length is 18.3 inches, and the overall length from sealing surface to connector end is 20.9 inches. The sensor housing is made of metal with a steel finish, weighing approximately 0.24 pounds.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio readings for Saab 9-2X and Subaru Forester, Impreza, Legacy, Outback
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing accurate emissions data
• Helps reduce harmful exhaust emissions for compliant vehicle operation
• Prevents engine performance issues caused by faulty oxygen sensors

Installation Notes and Tips

Installation requires removal of the old oxygen sensor and threading the Bosch 15170 sensor into the exhaust manifold or pipe. Use a 22 mm wrench or oxygen sensor socket for proper tightening. Ensure the wiring harness is connected securely to the vehicle’s connector, matching the male rectangular connector and blade terminals. No additional mounting brackets or accessories are included. It is recommended to check for exhaust leaks and sensor wiring integrity during installation.

Quality Assurance and Warranty

The Bosch Validated Oxygen Sensor 15170 is manufactured to meet OEM standards for fit, form, and function. Bosch provides quality assurance through rigorous testing and validation processes. While specific warranty details are not provided here, Bosch typically offers limited warranties on their oxygen sensors to cover defects in materials and workmanship.