Bosch 15817 Oxygen Sensor - Upstream

Bosch Wideband Oxygen Sensor for Volvo and Land Rover

Bosch Validated Oxygen Sensor 15817 is a direct-fit wideband air-fuel ratio sensor for upstream applications. It delivers continuous, high-precision AFR feedback to the ECU, helping maintain accurate fuel control in Volvo and Land Rover emissions systems.

Key Features

• Wideband A/F oxygen sensor for precise lambda measurement across the full operating range
• Heated design for faster sensor warm-up and stable operation
• Specific-fit replacement with a 4-wire harness and included wiring harness
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Rectangle male connector with blade terminals for OE-style connection
• Robust metal housing and ceramic sensor construction for thermal durability
• Overall length: 19.9 in; sealing surface to connector end: 18.7 in

Product Details

Bosch 15817 is part of the Bosch Validated Oxygen Sensor line, built around Bosch wideband technology that measures air-fuel ratio continuously rather than only switching rich or lean. That level of signal detail helps the engine control module manage mixture, fuel delivery, and emissions with greater precision. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this sensor reflects that OE development background for upstream service on Volvo S60, Volvo XC60, Volvo XC90, Volvo V60, Volvo S80, Volvo XC70, Volvo V70, Volvo S60 Cross Country, Volvo V60 Cross Country, and Land Rover LR2 applications.

This part cross-references Bosch 15817 for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Incorrect air-fuel ratio readings affecting drivability
• Reduced fuel economy caused by inaccurate mixture control
• Rough idle, hesitation, or inconsistent throttle response
• Emissions test failures tied to sensor degradation

Installation Notes and Tips

• Fits 2017-2018 Volvo V60, Upstream
• Fits 2017 Volvo S90, Upstream
• Fits 2017 Volvo XC60, Upstream
• Fits 2016-2017 Volvo XC90, Upstream
• Fits 2011-2016 Volvo S60, Upstream
• Fits 2003-2004 Volvo S60, Upstream
• Fits 2016 Volvo S60 Cross Country, Upstream
• Fits 2016 Volvo S80, Upstream
• Fits 2015-2016 Volvo V60, Upstream
• Fits 2015-2016 Volvo V60 Cross Country, Upstream
• Fits 2010-2016 Volvo XC60, Upstream
• Fits 2008-2016 Volvo XC70, Upstream
• Fits 2007-2015 Volvo S80, Upstream
• Fits 2007-2014 Volvo XC90, Upstream
• Fits 2008-2012 Land Rover LR2, Upstream
• Fits 2008-2010 Volvo V70, Upstream
• Fits 2003-2004 Volvo V70, Upstream

Verify connector shape, thread size, and harness routing before installation. Use the upstream location specified for the vehicle, and confirm the original sensor style matches the wideband configuration before replacement.

Quality Assurance

Bosch supplies this oxygen sensor with OE-proven engineering and validated aftermarket application coverage. The design uses fast light-off, optimized heater control, and durable construction to support reliable operation through repeated heat cycles and load changes.