Denso 234-4703 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Overview of the Denso OE Style Oxygen Sensor 234-4703

The Denso OE Style Oxygen Sensor 234-4703 is designed specifically for select Nissan and INFINITI vehicles, including the Frontier, Pathfinder, Pickup, QX4, and Xterra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for Nissan and INFINITI models: Frontier, Pathfinder, Pickup, QX4, Xterra
• Threaded mounting type with 0.708-inch thread diameter for secure installation
• Four-wire design with male connector for reliable electrical connection
• Wiring harness length of 50.39 inches to accommodate factory routing

Detailed Features and Specifications

This oxygen sensor from Denso’s OE Style line is engineered to meet original equipment specifications, providing a direct replacement for the factory sensor. The heated sensor element allows the unit to reach operating temperature quickly, reducing emissions during cold starts. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance. The male connector and threaded mounting type simplify installation and maintain a secure fit. With a wiring harness length of 50.39 inches, this sensor fits the factory harness routing without modification.

About the Denso OE Style Product Line

The OE Style product line by Denso focuses on delivering parts that match the original equipment in form, fit, and function. This ensures compatibility and reliable performance for vehicles requiring precise sensor operation. The 234-4703 oxygen sensor is part of this line, designed to meet the exact specifications needed for Nissan and INFINITI models, supporting emissions compliance and engine management systems.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Helps resolve rough idling and poor fuel economy caused by faulty sensors
• Reduces emissions by ensuring correct exhaust gas readings
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Denso 234-4703 oxygen sensor, ensure the engine is cool to avoid burns. Use the correct socket size for the 0.708-inch threaded sensor to prevent damage. Verify the wiring harness length of 50.39 inches is sufficient for your vehicle’s routing. Confirm the male connector matches the factory harness to ensure proper electrical connection. Follow vehicle-specific torque specifications to secure the sensor properly.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style 234-4703 sensor is designed to provide reliable operation consistent with original equipment. Warranty coverage details should be confirmed with the parts provider or manufacturer documentation.