NTK 25189 Oxygen Sensor - Upstream

Overview of NTK Direct Fit Oxygen Sensor 25189

The NTK Direct Fit Oxygen Sensor 25189 is designed for precise emission control in select Chevrolet, Pontiac, and Suzuki vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for Chevrolet Aveo, Aveo5, Pontiac Forenza, Suzuki Swift+, Wave, and Wave5
• 15.75-inch wiring harness length for convenient installation
• Threaded mounting type with 18mm thread diameter
• Four-wire configuration for reliable signal transmission

Details on the Direct Fit Oxygen Sensor Line

The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors tailored to specific vehicle applications. This product line focuses on direct compatibility, reducing installation time and ensuring proper sensor function without modification. The 25189 sensor maintains the integrity of the original equipment by matching OEM specifications for fit and performance.

Product Features and Specifications

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions sooner after engine start. The 15.75-inch wiring harness length offers flexibility during installation, while the four-wire design supports both the sensor signal and heater circuit. The threaded mounting type with an 18mm diameter ensures a secure and leak-free fit in the exhaust system.

Applications and Common Issues Addressed

• Compatible with Chevrolet Aveo and Aveo5 models
• Compatible with Pontiac Forenza
• Compatible with Suzuki Swift+, Wave, and Wave5
• Helps resolve rough idling and poor fuel economy
• Addresses check engine light codes related to oxygen sensor failure
• Improves emissions system performance and reduces exhaust pollutants

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use appropriate tools to remove the old sensor and install the NTK 25189 sensor by threading it securely into the exhaust port. Verify the wiring harness length of 15.75 inches is sufficient for your vehicle’s routing. Avoid over-tightening to prevent damage to the sensor or exhaust threads.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet strict quality standards for durability and performance. The Direct Fit Oxygen Sensor 25189 undergoes rigorous testing to ensure reliable operation under various driving conditions. Warranty coverage details should be confirmed with the product documentation or supplier.