Bosch 18115 Oxygen Sensor - Upstream

Bosch Wideband O2 Sensor for Jaguar Upstream Applications

Bosch Validated Oxygen Sensor 18115 is a specific-fit, heated wideband air-fuel ratio sensor built for precise upstream monitoring. It delivers fast response and detailed lambda feedback to the ECU, helping maintain accurate fuel control in Jaguar applications that require a direct replacement sensor.

Key Features

• Wide band oxygen sensor type for continuous air-fuel ratio measurement
• Heated design for faster light-off and stable operation
• Specific fit with included wiring harness and 4-wire configuration
• Threaded mounting with 18 mm thread diameter and 22 mm hex size
• Rectangle male connector with blade terminals
• Metal housing for durable underhood service
• Overall length: 25.0 in; harness length: 21.6 in

Product Details

Bosch 18115 is part of the Bosch Validated Oxygen Sensor line, a product line focused on OE-style replacement sensors with application-specific fitment and validated performance. This wideband sensor measures the air-fuel ratio across the full lambda range, giving the engine control system more detailed input than a traditional switching O2 sensor. Bosch pioneered the planar pump-cell wideband design used in modern engine management, and this sensor reflects that OE development background in a direct-fit aftermarket format.

Compatible With 2010-2015 Jaguar XK, Upstream; 2010-2015 Jaguar XKR, Upstream; 2012-2015 Jaguar XKR-S, Upstream; 2010-2013 Jaguar XJ, Upstream; 2012 Jaguar XF, Upstream; 2012 Jaguar XFR, Upstream; 2011 Jaguar XF, Upstream with Black Connector from chassis # R47154; and 2011 Jaguar XFR, Upstream with Black Connector from chassis # R47154. This part cross-references C2P16396 for the same application. Bosch 18115 is a direct replacement choice for Jaguar XK upstream oxygen sensor service and Jaguar XJ wideband O2 sensor replacement needs.

Common Issues This Sensor Can Address

• Fault codes related to upstream air-fuel ratio sensor performance
• Rough idle or inconsistent fuel mixture control
• Reduced fuel economy caused by inaccurate oxygen sensor feedback
• Delayed sensor response during load changes
• Emissions test failures tied to a worn wideband sensor

Installation Notes

Install in the upstream position only for the listed Jaguar applications. Verify connector style, chassis breakpoints, and sensor location before installation, especially on 2011 Jaguar XF and XFR models with the black connector note. Use the threaded mounting point and confirm the 18 mm thread size matches the original sensor. Inspect the harness routing and connector lock before clearing diagnostic codes.

Quality Assurance

Bosch draws on more than five decades of OE sensor development, and the Bosch Validated Oxygen Sensor line is built to meet the demands of modern engine management systems. Bosch 18115 is engineered for reliable operation through rapid thermal cycling and changing load conditions in the applications listed above.