NTK 25151 Oxygen Sensor - Downstream Right, Upstream or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 25151

The NTK Direct Fit Oxygen Sensor 25151 is designed specifically for select Hyundai and Kia models, including the Amanti, Sonata, XG300, and XG350. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for Hyundai Amanti, Sonata, Kia XG300, and XG350
• 12.5-inch wiring harness length for convenient installation
• Threaded mounting type with 18mm thread diameter
• Four-wire configuration for reliable signal transmission

Features of the Direct Fit Oxygen Sensor Line

The NTK Direct Fit Oxygen Sensor product line focuses on providing exact replacement sensors tailored to specific vehicle applications. This approach eliminates the need for modifications, ensuring a straightforward installation process and maintaining factory-level performance. The 25151 part number exemplifies this line by offering a sensor engineered to meet the precise specifications of Hyundai and Kia models, supporting emission control systems effectively.

Detailed Product Description

This oxygen sensor features a heated element that accelerates the sensor's readiness after engine start, improving fuel efficiency and reducing emissions. The 12.5-inch wiring harness length allows for proper routing without strain or excess slack. Its four-wire design supports both the sensor signal and heater circuit, ensuring consistent operation. The threaded mounting type with an 18mm diameter matches OEM specifications, providing a secure and leak-free fit.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel ratio for Hyundai Amanti and Sonata models
• Supports emission control compliance on Kia XG300 and XG350 vehicles
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by providing accurate oxygen level readings
• Reduces exhaust emissions by enabling efficient catalytic converter operation

Installation Notes and Tips

• Ensure vehicle compatibility with Hyundai Amanti, Sonata, Kia XG300, or XG350 before installation
• Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole
• Do not over-tighten the sensor; follow manufacturer torque specifications
• Inspect wiring harness for damage and secure connections to prevent signal loss

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Direct Fit Oxygen Sensor 25151 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.