Bosch 17070 Oxygen Sensor - Upstream

Bosch Wideband OE Oxygen Sensor

Bosch 17070 is an Actual OE Oxygen Sensor built as a wideband air-fuel sensor for precise mixture feedback to the ECU. It is a specific-fit, heated sensor with a 5-wire harness and threaded mounting for direct replacement on select Volvo applications.

For drivers searching for a 2000-2002 Volvo C70 upstream oxygen sensor, 2001 Volvo S60 upstream oxygen sensor, or 2000-2001 Volvo V70 upstream oxygen sensor, Bosch 17070 provides OE-style fitment and sensor response for modern engine management.

Key Features

• Wideband A/F oxygen sensor for continuous air-fuel ratio measurement
• Heated design for faster light-off and stable operation
• Specific fit with threaded mounting
• 5-wire harness with included wiring harness
• Rectangle connector, male connector and terminal ends
• 18 mm thread size and 22 mm hex size
• Standard replacement grade for direct service use

Product Details

Bosch 17070 uses Bosch wideband sensor technology to deliver detailed lambda feedback across the full operating range, giving the engine control unit more precise data than a traditional switching sensor. Bosch pioneered the planar pump-cell wideband design used in modern low-emission engine systems, and this part reflects that OE development background. The sensor is built with a metal housing, ceramic sensing element construction, and optimized heater control for consistent performance during load changes and thermal cycling. This Bosch Actual OE Oxygen Sensor is a direct replacement for select Volvo models, including the C70, S60, V70, and S70 in upstream locations.

This part cross-references 8627750 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings at the ECU
• Reduced fuel economy caused by inaccurate mixture control
• Rough running or hesitation tied to sensor signal issues
• Higher emissions from delayed or unstable sensor feedback

Installation Notes

Install Bosch 17070 in the upstream position only where listed in the fitment data. Confirm connector shape, wire count, thread size, and harness length before installation. Use proper oxygen sensor service tools for removal and tightening, and inspect the exhaust bung threads and wiring routing before final connection. For fitment-specific service, verify the vehicle is a 2000-2002 Volvo C70, 2001 Volvo S60, 2000-2001 Volvo V70, or 2000 Volvo S70 with an upstream sensor location.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience and supplies aftermarket sensors built to OE-proven standards used by vehicle manufacturers.