Bosch 18014 Oxygen Sensor - Downstream Right

Bosch Oxygen Sensor for Toyota RAV4

Bosch Validated Oxygen Sensor 18014 is a specific-fit, narrow-band heated O2 sensor for the downstream right position on select 2006-2012 Toyota RAV4 models. It provides direct air-fuel feedback to the ECU for stable closed-loop operation and emissions control.

Built with Bosch’s OE development background, this sensor uses a ceramic sensing element, optimized heater control, and high-temperature-resistant materials for consistent signal output under heat and vibration. Bosch 18014 is a practical replacement for a worn downstream sensor on Toyota RAV4 applications.

Key Features

• Specific-fit Bosch Validated Oxygen Sensor
• Part number: 18014
• Fits 2006-2012 Toyota RAV4, downstream right
• Narrow-band heated oxygen sensor design
• 4-wire configuration with square female connector
• Threaded mounting with 18 mm thread diameter
• Wiring harness included for direct replacement
• Standard replacement grade for emission control service

Product Details

Bosch 18014 is a switching-type oxygen sensor that monitors exhaust oxygen content and sends a precise signal to the ECU. That feedback supports fuel trim correction, steady combustion control, and proper catalyst monitoring. The Bosch Validated Oxygen Sensor line reflects Bosch’s long OE sensor development history, including early thimble-style designs and later planar narrowband technology focused on faster light-off and quicker closed-loop response.

For Toyota RAV4 owners searching for a downstream right oxygen sensor replacement, Bosch 18014 offers the correct fitment profile and connector style for the listed application. This part cross-references Toyota 894650R030 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings from a degraded downstream sensor
• Slow sensor response during closed-loop operation
• Emissions test failure tied to sensor signal faults
• Rough combustion control caused by inaccurate exhaust oxygen feedback

Installation Notes

Confirm the downstream right location before installation and match the square female connector, 4-wire layout, and 18 mm threaded mount to the original part. Inspect the exhaust bung threads and connector condition before fitting Bosch 18014. Use proper oxygen sensor service tools and follow the vehicle service procedure for torque and routing.

Quality Assurance

Bosch supplies this oxygen sensor as an OE-proven replacement backed by more than five decades of oxygen sensor development. The design uses durable materials and heater control strategies intended to maintain accurate operation in demanding exhaust conditions.