Denso 234-9049 Air / Fuel Ratio Sensor - Upstream or Upstream Left

Reliable Air/Fuel Ratio Sensor for Lexus, Toyota, and Scion Vehicles

The Denso OE Style 234-9049 Air/Fuel Ratio Sensor is designed to provide accurate emissions control for select Lexus, Toyota, and Scion models. This heated sensor ensures optimal engine performance by monitoring the air-to-fuel mixture precisely.

• Heated sensor type for faster response times
• Specific fit for Lexus, Toyota, and Scion models including Avalon, Camry, ES350, Highlander, RAV4, RX350, RX450h, Sienna, Solara, tC, and xB
• Wiring harness length of 20.08 inches for proper installation
• Four-wire configuration with a male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type ensuring consistent performance

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications. The 234-9049 Air/Fuel Ratio Sensor is engineered to match the fit, form, and function of the factory-installed sensor, providing reliable emissions control and compatibility with specific Lexus, Toyota, and Scion vehicles.

Detailed Product Description

This Denso 234-9049 Air/Fuel Ratio Sensor is a heated sensor designed to accurately measure the oxygen content in the exhaust gases. Its four-wire design and 20.08-inch wiring harness length allow for precise electrical connections and proper fitment. The male connector and 0.711-inch thread diameter ensure secure installation in the exhaust system. This sensor is a specific fit for various Lexus, Toyota, and Scion models, including popular vehicles like the Toyota Camry and Lexus RX350, helping maintain optimal engine efficiency and emissions compliance.

Common Applications and Issues Addressed

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

Installation Notes and Tips

Ensure the vehicle is cool before installation to avoid burns. Disconnect the battery prior to sensor replacement to prevent electrical shorts. Use the correct thread size (0.711 inches) and torque specifications to avoid damage. Verify the four-wire harness and male connector align with the vehicle’s wiring. This sensor is a specific fit; confirm compatibility with your Lexus, Toyota, or Scion model before installation.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. The 234-9049 part number undergoes rigorous testing to comply with emissions regulations. Warranty coverage details vary by distributor but typically include protection against defects in materials and workmanship.