Bosch 18150 Oxygen Sensor - Upstream Right

Bosch Validated Oxygen Sensor 18150

Bosch 18150 is a specific-fit, narrow-band heated oxygen sensor built for precise air-fuel-ratio feedback to the ECU. It is a direct replacement for select Hyundai and Kia applications, including upstream right positions on models such as the Hyundai Santa Fe, Hyundai Santa Fe XL, Kia Sorento, Kia Sedona, Kia Cadenza, and Hyundai Azera.

Key Features

• Specific-fit Bosch Validated Oxygen Sensor for direct replacement use
• Narrow-band heated oxygen sensor type for closed-loop fuel control
• 4-wire design with square connector and blade terminals
• Threaded mounting with 18 mm thread size and 22 mm hex size
• Wiring harness included with 16.5 in harness length and 18.7 in sealing-surface-to-connector length
• Metal housing and high-temperature-resistant construction for demanding exhaust conditions
• Fits upstream right locations on select Hyundai and Kia vehicles

Product Details

Bosch Validated Oxygen Sensor 18150 uses a narrow-band sensing element and integrated heater to deliver fast warm-up and stable signal output once the engine reaches operating temperature. Bosch’s oxygen sensor development has progressed from early OE thimble-style designs to planar narrowband technology, improving light-off response and closed-loop operation. For drivers servicing a Hyundai Santa Fe, Hyundai Santa Fe XL, or Kia Sorento, this sensor provides the air-fuel feedback the engine management system relies on for accurate combustion control and emissions monitoring.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or unstable fuel trim readings
• Reduced fuel economy caused by inaccurate exhaust feedback
• Emissions test failures tied to upstream sensor faults
• Delayed closed-loop operation after cold start

Installation Notes

Install Bosch 18150 in the upstream right position only where listed in the fitment data. Verify the 18 mm thread size, 22 mm hex size, square connector shape, and 4-wire configuration before installation. Because this is a threaded exhaust sensor, use proper oxygen-sensor service tools and follow vehicle-specific torque and routing procedures to protect the harness and connector.

Quality Assurance

Bosch backs this oxygen sensor with more than five decades of OE development experience. The Validated Oxygen Sensor line is built to OE-proven standards for accurate signal response, durable heater control, and consistent performance under heat and vibration.

Compatible Vehicles

• Fits 2019 Hyundai Santa Fe XL, Upstream Right
• Fits 2013 Hyundai Santa Fe XL, Upstream Right
• Fits 2013-2018 Hyundai Santa Fe, Upstream Right
• Fits 2014-2018 Kia Sedona, Upstream Right
• Fits 2012-2017 Hyundai Azera, Upstream Right
• Fits 2014-2017 Kia Sorento, Upstream Right
• Fits 2014-2016 Kia Cadenza, Upstream Right