Denso 234-4550 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4550

The Denso OE Style Oxygen Sensor 234-4550 is designed specifically for Hyundai Elantra, Elantra Coupe, and Elantra GT models. This heated oxygen sensor features a threaded mounting type and a 29.09-inch wiring harness, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Hyundai Elantra, Elantra Coupe, and Elantra GT
• Threaded mounting type with 0.708-inch thread diameter
• 29.09-inch wiring harness length with 4 wires and female connector
• Part number 234-4550 for easy identification and replacement

Detailed Features and Specifications

This Denso oxygen sensor is part of the OE Style product line, which focuses on delivering original equipment quality and fitment. The OE Style line is engineered to meet or exceed factory specifications, providing a direct replacement that maintains the integrity of the vehicle’s emission system. The 234-4550 sensor includes a heated element to ensure faster sensor activation and improved fuel efficiency. Its 4-wire design supports both the sensor signal and heater circuit, while the female connector and specific thread diameter guarantee compatibility with the designated Hyundai models.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the following Hyundai vehicles:

• Hyundai Elantra
• Hyundai Elantra Coupe
• Hyundai Elantra GT

It is designed to replace the factory oxygen sensor in these models, helping to maintain proper air-fuel mixture and reduce harmful emissions.

Common Issues Addressed by the Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Heater circuit failure causing delayed sensor response

Installation Notes and Tips

When installing the Denso 234-4550 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the thread diameter of 0.708 inches matches the mounting port. Connect the female connector securely to the vehicle’s wiring harness. It is recommended to apply anti-seize compound on the threads to facilitate future removal.

Quality Assurance and Warranty

Denso’s OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable operation. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emission regulations and supports the longevity of your Hyundai Elantra’s emission control system.