NTK 23551 Oxygen Sensor - Upstream, Upstream Left, Upstream Rear or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 23551

The NTK Direct Fit Oxygen Sensor 23551 is designed for precise emission control in select Chrysler, Dodge, and Mitsubishi vehicles. This heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and reduced emissions.

• Heated sensor type for faster response times
• Specific fit for Chrysler, Dodge, and Mitsubishi models
• Threaded mounting type with 18mm thread diameter
• 27.5-inch wiring harness length for direct installation
• Four-wire configuration for reliable signal transmission

Detailed Product Features and Specifications

This NTK 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 sensor is designed with a threaded mounting type and an 18mm thread diameter, ensuring a secure and proper fit in the exhaust system. With a 27.5-inch wiring harness length and four wires, it provides a direct fit installation without the need for modifications. This sensor is specifically engineered for compatibility with Chrysler, Dodge, and Mitsubishi vehicles, including models such as the Diamante, Eclipse, Endeavor, Galant, Lancer, Montero, Sebring, and Stratus.

About the NTK Direct Fit Oxygen Sensor Line

The Direct Fit Oxygen Sensor line by NTK is developed to provide exact replacement sensors that match OEM specifications. This product line focuses on delivering sensors that fit directly into the vehicle’s existing wiring and mounting points, minimizing installation time and ensuring reliable performance. The 23551 part number is part of this line, offering a precise fit for the listed vehicle makes and models.

Common Applications and Problem Resolution

• Restores accurate oxygen sensing for improved fuel economy
• Helps resolve check engine light issues related to oxygen sensor faults
• Reduces harmful emissions by maintaining proper air-fuel ratios
• Prevents engine performance problems caused by faulty sensors
• Supports smooth engine idling and acceleration

Installation Notes and Tips

When installing the NTK 23551 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. The 27.5-inch wiring harness length allows for direct connection without splicing. Verify the sensor’s four-wire configuration matches the vehicle’s harness before installation. After installation, clear any diagnostic trouble codes to reset the vehicle’s computer system.

Quality Assurance and Warranty

NTK oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 23551 is manufactured to provide consistent and reliable operation under normal driving conditions. Warranty coverage details should be confirmed with the product documentation or supplier.