NTK 24039 Oxygen Sensor - Upstream Left or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 24039

The NTK Direct Fit Oxygen Sensor 24039 is engineered for precise emission control in select INFINITI and Nissan vehicles. Designed as a heated oxygen sensor with a specific fit, it ensures accurate air-fuel mixture readings for optimal engine performance.

• Heated oxygen sensor for faster response times
• Specific fit for INFINITI 300ZX, J30, and Nissan Q45 models
• Threaded mounting type with 18mm thread diameter
• 22.75-inch wiring harness length for direct installation
• Three-wire configuration for reliable signal transmission

Detailed Product Description

This NTK oxygen sensor, part number 24039, belongs to the Direct Fit Oxygen Sensor line, which focuses on providing exact replacement sensors tailored to specific vehicle applications. The heated sensor element allows quicker activation, improving emission control system efficiency shortly after engine start. With a threaded mounting type and an 18mm thread diameter, installation is straightforward and secure. The 22.75-inch wiring harness length accommodates factory routing without modification, and the three-wire design supports both sensor heating and signal output functions.

Compatible Vehicles and Applications

This oxygen sensor is compatible with the following vehicles:

• INFINITI 300ZX
• INFINITI J30
• Nissan Q45

It is designed to replace the original sensor in these models, ensuring proper fit and function within the emission control system.

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the NTK 24039 oxygen sensor, ensure the engine is cool to avoid burns. Use appropriate tools to avoid damaging the sensor or wiring harness. The specific fit design eliminates the need for splicing or modifications. Verify the sensor thread diameter matches the vehicle’s exhaust port (18mm) before installation. After installation, clear any diagnostic trouble codes to reset the engine control unit.

Quality Assurance and Warranty

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