Bosch 18071 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Reliable Oxygen Sensor for Lexus, Toyota, and Scion Vehicles

The Bosch Validated Oxygen Sensor 18071 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. This heated, wide-band oxygen sensor is compatible with a range of Lexus, Toyota, and Scion models, ensuring precise fitment and reliable operation.

• Heated oxygen sensor for faster warm-up and accurate readings
• Specific fit for select Lexus, Toyota, and Scion models
• Wide-band sensor type for enhanced emission control
• 12.5-inch wiring harness with 4 wires and blade terminals
• Durable metal housing with 22 mm hex size and threaded mounting
• Includes wiring harness and male rectangular connector
• Standard replacement grade for dependable performance

About the Bosch Validated Oxygen Sensor Line

The Bosch Validated Oxygen Sensor line is engineered to meet or exceed OEM specifications, providing reliable sensor performance and durability. This product line focuses on delivering precise sensor readings to optimize engine management systems and reduce emissions. The 18071 oxygen sensor is part of this line, offering a specific fit and heated design to ensure quick sensor activation and consistent operation in various driving conditions.

Product Details and Specifications

This Bosch oxygen sensor features a heated element to reduce warm-up time, allowing the sensor to provide accurate data shortly after engine start. The wide-band sensor type enables precise measurement of oxygen levels in the exhaust, which is critical for maintaining optimal air-fuel ratios. The sensor includes a 12.5-inch wiring harness with four wires and blade terminals, terminating in a male rectangular connector for secure and correct installation. The sensor housing is made of metal with a 22 mm hex size and an 18 mm threaded diameter, designed for threaded mounting without a bracket. The overall length from sealing surface to connector end is approximately 14.8 inches, with a total length of 15.9 inches, ensuring proper reach and fitment in compatible vehicles.

Compatible Vehicles and Common Applications

• Lexus models including ES350, GS350, GS450h, IS250, IS300, IS350, LS460, LS600h, LX570, NX200t, NX300, RC300, RC350
• Toyota models such as 4Runner, Corolla, FJ Cruiser, Land Cruiser, Matrix, Prius, Prius C, Prius Plug-In, Prius V, xD
• Scion models including CT200h, iQ, xD

This oxygen sensor is used to address issues such as:

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance problems like rough idling or hesitation
• Sensor heater circuit malfunctions causing delayed sensor response

Installation Notes and Tips

When installing the Bosch Validated Oxygen Sensor 18071, ensure the vehicle is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s factory setup to prevent electrical issues. Do not overtighten the sensor; torque to manufacturer specifications. Since this sensor is a specific fit, confirm compatibility with your Lexus, Toyota, or Scion model before installation.

Quality Assurance and Warranty

Bosch oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Bosch Validated Oxygen Sensor 18071 is a standard replacement grade part designed to provide consistent operation over its service life. While specific warranty details may vary, Bosch typically offers coverage against defects in materials and workmanship, supporting confidence in this sensor’s quality.