Denso 234-5061 Air / Fuel Ratio Sensor - Upstream

Overview of the Denso OE Style Air/Fuel Ratio Sensor

The Denso OE Style Air/Fuel Ratio Sensor 234-5061 is designed specifically for select Infiniti and Nissan models, including the 350Z, Altima, FX35, G35, M35, and Sentra. This heated sensor ensures accurate air and fuel mixture readings to support optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fitment for Infiniti and Nissan vehicles
• 20.87-inch wiring harness length for precise installation
• Five-wire configuration with male connector
• Thread diameter of 0.711 inches for secure mounting
• Regular grade type for reliable operation

Detailed Product Description

The Denso 234-5061 air/fuel ratio sensor is engineered to meet the exact specifications of the OE Style product line, which focuses on delivering parts that closely match original equipment in form, fit, and function. This sensor features a heated element to reduce warm-up time, improving sensor accuracy and engine efficiency shortly after startup. The 20.87-inch wiring harness length and five-wire design with a male connector ensure compatibility and ease of connection with the vehicle’s existing wiring system. The thread diameter of 0.711 inches allows for proper installation in the designated sensor port, maintaining a secure and leak-free fit.

Compatible Vehicles and Applications

This air/fuel ratio sensor is compatible with specific Infiniti and Nissan models, including:

• Infiniti 350Z, FX35, G35, M35
• Nissan Altima, Sentra

It is designed to monitor the oxygen content in the exhaust gases, providing critical data to the engine control unit (ECU) for adjusting fuel injection and maintaining optimal combustion.

Common Issues Addressed by This Sensor

• Incorrect air/fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Rough idling or engine hesitation due to inaccurate sensor data
• Increased emissions from improper combustion control
• Failed emissions tests related to sensor malfunction

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools to avoid damaging the sensor or wiring harness
• Verify the connector gender and wire count match the vehicle’s harness
• Apply anti-seize compound on the sensor threads if recommended by the vehicle manufacturer
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

The Denso OE Style line is known for providing parts that meet original equipment standards, ensuring reliable performance and durability. The 234-5061 air/fuel ratio sensor undergoes rigorous quality control to maintain consistent operation within specified tolerances. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer, as they may vary by region and application.