NTK 25219 Oxygen Sensor - Downstream Left

Overview of NTK Direct Fit Oxygen Sensor 25219

The NTK Direct Fit Oxygen Sensor 25219 is designed specifically for select Hyundai and Kia models, including the Azera, Cadenza, Santa Fe, Santa Fe XL, Sedona, and Sorento. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for Hyundai and Kia vehicles listed
• Threaded mounting type with 18mm thread diameter for secure installation
• 12.25-inch wiring harness length with 4 wires for reliable connectivity
• Part number 25219 for exact replacement and compatibility

Details on the Direct Fit Oxygen Sensor Product Line

The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors that match OEM specifications. This product line focuses on direct fitment, eliminating the need for modifications or additional adapters. The 25219 sensor maintains factory-level performance and durability, ensuring proper emissions control and engine management for compatible Hyundai and Kia vehicles.

Technical Description and Features

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The 4-wire design supports both the sensor signal and heater circuit, enhancing responsiveness and accuracy. With a threaded mounting type and an 18mm thread diameter, installation is straightforward and secure. The 12.25-inch wiring harness length provides sufficient reach for proper connection without excess slack.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel ratio for efficient combustion
• Reduces engine misfires and rough idling caused by faulty sensors
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate oxygen level data
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the NTK 25219 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector match the vehicle’s factory setup. Apply anti-seize compound to the threads if recommended by the vehicle manufacturer to facilitate future removal. Tighten the sensor to the specified torque to prevent leaks.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet or exceed OEM standards for durability and performance. The Direct Fit Oxygen Sensor 25219 undergoes rigorous testing to ensure reliable operation under various driving conditions. While specific warranty details may vary, NTK typically offers coverage against defects in materials and workmanship to support long-term use.