Denso 234-9155 Air / Fuel Ratio Sensor - Upstream Left, Upstream Rear or Upstream Right

Reliable Air/Fuel Ratio Sensor for Lexus and Toyota Vehicles

The Denso OE Style 234-9155 Air/Fuel Ratio Sensor is designed specifically for select Lexus and Toyota models, including the Avalon, Camry, ES350, Highlander, RX350, Sienna, and Venza. This heated sensor ensures accurate monitoring of the air-fuel mixture to optimize engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models listed
• 13.46-inch wiring harness length for precise installation
• Four-wire configuration with male connector
• Thread diameter of 0.708 inches for secure mounting
• Regular grade type for standard OEM replacement

About the Denso OE Style Product Line

The OE Style line from Denso offers direct replacement parts engineered to meet original equipment specifications. The 234-9155 Air/Fuel Ratio Sensor maintains the quality and fitment standards expected from factory components, ensuring compatibility and reliable operation in your Lexus or Toyota vehicle.

Product Details and Specifications

This air/fuel ratio sensor features a heated element to provide quicker sensor activation and more accurate readings under various operating conditions. The 13.46-inch wiring harness length allows for proper routing and connection within the engine bay. With four wires and a male connector, this sensor integrates seamlessly with the vehicle’s existing wiring harness. The thread diameter of 0.708 inches ensures a secure and proper fit in the designated mounting location. Designed as a specific fit part, it is compatible with Lexus Avalon, Camry, ES350, Highlander, RX350, Sienna, and Venza models, providing a reliable replacement option.

Common Applications and Issues Addressed

• Helps maintain optimal air/fuel mixture for efficient combustion
• Reduces emissions by providing accurate sensor data to the engine control unit
• Resolves engine performance issues related to faulty air/fuel ratio sensing
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel economy by ensuring proper sensor operation

Installation Notes and Tips

When installing the Denso 234-9155 sensor, ensure the wiring harness is routed without sharp bends or exposure to excessive heat. Verify the male connector is securely attached to the vehicle’s wiring harness. Use the correct thread diameter to avoid cross-threading during installation. It is recommended to follow vehicle-specific service manual instructions for sensor replacement procedures.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet original equipment standards, providing consistent performance and durability. This part number 234-9155 undergoes rigorous quality control to ensure reliability in Lexus and Toyota applications. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer.