Denso 234-9057 Air / Fuel Ratio Sensor - Upstream Rear

Reliable Air/Fuel Ratio Sensor for Lexus and Toyota Vehicles

The Denso OE Style Air/Fuel Ratio Sensor 234-9057 is designed specifically for select Lexus and Toyota models, including the Camry, ES330, and Solara. 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 Camry, ES330, and Toyota Solara
• 9.06-inch wiring harness length for precise installation
• Four-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for standard durability and performance

About the Denso OE Style Product Line

The OE Style line from Denso offers direct replacement parts engineered to meet original equipment specifications. The 234-9057 air/fuel ratio sensor maintains factory-level fit, form, and function, ensuring compatibility and reliable operation in Lexus and Toyota vehicles. This product line focuses on providing components that integrate seamlessly with existing vehicle systems.

Product Details and Specifications

This air/fuel ratio sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel mixture readings under various driving conditions. The 9.06-inch wiring harness length provides adequate reach for installation without excess slack. With four wires and a male connector, it matches the original sensor's electrical configuration. The 0.711-inch thread diameter ensures a proper seal and fit within the exhaust system. Designed as a specific fit part, it is compatible with Lexus Camry, ES330, and Toyota Solara models, making it a precise replacement for the original sensor.

Common Applications and Issues Addressed

• Helps correct inaccurate air/fuel mixture readings
• Resolves engine performance issues related to sensor failure
• Reduces emissions by providing accurate data to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by maintaining proper combustion balance

Installation Notes and Tips

When installing the Denso 234-9057 air/fuel ratio sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector gender matches the vehicle harness for a secure connection. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. This ensures dependable performance and peace of mind when replacing your Lexus or Toyota air/fuel ratio sensor.