NTK 25662 Air / Fuel Ratio Sensor - Upstream, Upstream Left or Upstream Right

Overview of NTK Direct Fit 4-Wire A/F Sensor 25662

The NTK Direct Fit 4-Wire Air/Fuel Ratio Sensor 25662 is designed for precise emission control in select Volvo models. This heated sensor ensures accurate air/fuel mixture readings, contributing to optimal engine performance and reduced emissions.

• Heated sensor type for faster response times
• Specific fit for Volvo C30, S40, S60, S80, V50, V70, and XC90
• 4-wire configuration with 30.5-inch wiring harness length
• Thread diameter of 18.0 mm and thread length of 0.38 inches
• Mounting bracket not included

Detailed Product Features and Specifications

This NTK Air/Fuel Ratio Sensor features a heated element that allows the sensor to reach operating temperature quickly, improving fuel mixture accuracy. The 4-wire design supports reliable electrical connections and sensor functionality. With a wiring harness length of 30.5 inches, installation flexibility is enhanced for the specified Volvo models. The sensor’s thread diameter of 18.0 mm and thread length of 0.38 inches ensure a secure and proper fit in the exhaust system. This sensor is a specific fit part, engineered to meet the exact requirements of Volvo vehicles including the C30, S40, S60, S80, V50, V70, and XC90, ensuring compatibility and performance.

About the Direct Fit 4-Wire A/F Sensor Product Line

The NTK Direct Fit 4-Wire A/F Sensor line is designed to provide precise air/fuel ratio measurements with a direct replacement fit. This product line focuses on delivering sensors that match OEM specifications for wiring, thread size, and sensor type, reducing installation complexity and ensuring reliable operation. The 4-wire heated sensors in this line are tailored for specific vehicle applications, such as the Volvo models supported by part number 25662.

Common Applications and Issues Addressed

• Helps maintain proper air/fuel mixture for efficient combustion
• Reduces emissions by providing accurate sensor data to the engine control unit
• Resolves check engine light triggers related to air/fuel ratio sensor faults
• Improves fuel economy by ensuring correct sensor feedback
• Prevents engine performance issues caused by faulty or slow sensor response

Installation Notes and Tips

When installing the NTK 25662 sensor, verify compatibility with your Volvo model to ensure proper fitment. The 30.5-inch wiring harness length provides adequate reach for most factory locations. Use appropriate tools to avoid damaging the 18.0 mm threaded sensor during installation. Note that this sensor does not include a mounting bracket, so reuse the existing bracket or mounting hardware. Follow vehicle manufacturer torque specifications for sensor installation.

Quality Assurance and Warranty

NTK sensors are manufactured to meet strict quality standards for durability and performance. The Direct Fit 4-Wire A/F Sensor 25662 undergoes rigorous testing to ensure reliable operation in emission control systems. Warranty coverage details should be confirmed with the product supplier or manufacturer, as they may vary by region.