Denso 234-9039 Air / Fuel Ratio Sensor - Upstream or Upstream Rear

Reliable Air/Fuel Ratio Sensor for Nissan Vehicles

The Denso OE Style 234-9039 air/fuel ratio sensor is designed specifically for select Nissan models, including the Altima, Cube, Maxima, Sentra, and Versa. This heated sensor ensures accurate monitoring of the air-to-fuel mixture, helping maintain optimal engine performance and emissions control.

• Heated sensor type for faster response times
• Specific fit for Nissan Altima, Cube, Maxima, Sentra, and Versa
• 14.57-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 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 234-9039 air/fuel ratio sensor in this line provides a balance of quality and value, designed to integrate seamlessly with the vehicle’s existing systems. This ensures reliable operation and compatibility with Nissan’s emission control requirements.

Detailed Product Description

This Denso air/fuel ratio sensor features a heated element that allows it to reach operating temperature quickly, improving sensor accuracy and reducing emissions during cold starts. The 14.57-inch wiring harness length provides flexibility for installation in the engine bay, while the four-wire design supports precise signal transmission. The male connector and 0.711-inch thread diameter ensure a secure and proper fit on compatible Nissan models. As a regular grade sensor, it meets standard OEM performance criteria without additional enhancements.

Common Applications and Issues Addressed

• Helps maintain proper air/fuel mixture for efficient combustion
• Reduces engine misfires and rough idling caused by faulty sensors
• Supports emission control systems to prevent check engine light triggers
• Improves fuel economy by providing accurate sensor data
• Prevents failed emissions tests related to sensor malfunction

Installation Notes and Tips

When installing the Denso 234-9039 sensor, ensure the engine is cool to avoid injury. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector type matches the vehicle’s harness before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks or sensor damage. It is recommended to clear any diagnostic trouble codes after installation to reset the vehicle’s computer system.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet strict quality standards and are tested for durability and performance. This air/fuel ratio sensor is designed to provide reliable operation consistent with OEM specifications. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor or retailer.