Bosch 15711 Oxygen Sensor - Upstream or Upstream Left

Reliable Oxygen Sensor for Lexus and Toyota Vehicles

The Bosch Engineered Oxygen Sensor 15711 is designed specifically for select Lexus and Toyota models, including the 4Runner, Camry, Celica, ES250, Land Cruiser, MR2, and Pickup. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance.

• Specific fit for Lexus and Toyota models
• Heated narrow-band oxygen sensor type
• 16.4-inch wiring harness length with 4 wires
• Blade terminal type with 4 male terminals
• Square male connector for secure connection
• Flange mounting type with 18 mm thread diameter
• Durable metal housing with steel finish
• Overall length of 20.1 inches for proper installation
• Includes wiring harness for direct replacement
• 22 mm hex size for installation

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise emission control components engineered to meet or exceed OEM specifications. The 15711 oxygen sensor is part of this line, offering a standard replacement grade sensor with a heated narrow-band design to maintain accurate air-fuel mixture readings and support efficient engine management systems in Lexus and Toyota vehicles.

Product Details and Specifications

This Bosch oxygen sensor features a 16.4-inch wiring harness with four wires and blade-type terminals, ensuring a reliable electrical connection. The sensor uses a flange mounting type with an 18 mm thread diameter and a 22 mm hex size for installation. Its metal housing with a steel finish provides durability under high-temperature conditions. The sensor is heated, which helps it reach operating temperature quickly for accurate emissions monitoring. The connector is a square-shaped male type with four terminals, designed for a specific fit rather than universal application.

Common Applications and Issues Addressed

• Restores proper oxygen sensing in Lexus 4Runner and Toyota Camry engines
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring accurate air-fuel mixture readings
• Prevents check engine light related to oxygen sensor faults
• Supports smooth engine performance in Toyota Land Cruiser and MR2 models

Installation Notes and Tips

When installing the Bosch Engineered Oxygen Sensor 15711, 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 original sensor to ensure proper fitment. The flange mounting requires careful threading to avoid cross-threading. No mounting bracket is included, so use the existing mounting hardware on the vehicle.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 15711 is manufactured to meet OEM standards for fit, form, and function. It is a standard replacement grade sensor designed for durability and reliable performance. Bosch products typically come with a limited warranty; please refer to Bosch’s official documentation for specific warranty details.