NTK 25678 Oxygen Sensor - Upstream Left or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 25678

The NTK Direct Fit Oxygen Sensor 25678 is engineered for precise emission control in select Hyundai and Kia vehicles. Designed as a heated oxygen sensor with a specific fit, it ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor type for faster response times
• Specific fitment for Hyundai and Kia models including Borrego, Genesis, Genesis Coupe, Santa Fe, Sorento, and Veracruz
• Threaded mounting type with an 18mm thread diameter
• Four-wire configuration for reliable signal transmission
• 18.75-inch wiring harness length for proper installation

Details on the Direct Fit Oxygen Sensor Line

The NTK Direct Fit Oxygen Sensor line focuses on providing exact replacement sensors tailored to specific vehicle applications. This approach eliminates the need for modifications during installation and maintains factory-level performance. The 25678 sensor is part of this line, offering a direct fit solution for emission control systems in Hyundai and Kia vehicles.

Product Features and Specifications

This oxygen sensor features a heated design, which allows it to reach operating temperature quickly, improving emission control efficiency. The sensor includes four wires, supporting both the heater circuit and signal output. Its threaded mounting type with an 18mm diameter ensures secure attachment to the exhaust system. The wiring harness length of 18.75 inches provides adequate reach for proper connection without excess slack.

Compatible Vehicles and Applications

• Hyundai Borrego
• Hyundai Genesis and Genesis Coupe
• Hyundai Santa Fe
• Kia Sorento
• Kia Veracruz

This sensor is designed specifically for these models, ensuring compatibility and reliable operation within their emission control systems.

Common Issues Addressed by NTK Oxygen Sensor 25678

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues related to improper sensor feedback
• Failed emissions tests linked to sensor degradation

Installation Notes and Tips

When installing the NTK 25678 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the wiring harness length and connector match the vehicle’s specifications. Proper torque should be applied to the sensor to prevent exhaust leaks.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 25678 undergoes rigorous testing to ensure reliable operation in emission control systems. Please refer to NTK’s warranty policy for specific coverage details.