NTK 24521 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 24521

The NTK Direct Fit Oxygen Sensor 24521 is designed to provide precise air-fuel mixture readings for improved engine performance and emissions control. This heated oxygen sensor is compatible with specific Nissan, Infiniti, and Mercury models, ensuring accurate fitment and reliable operation.

• Heated sensor type for faster response times
• Specific fit for select Nissan, Infiniti, and Mercury vehicles
• Threaded mounting type with 18mm thread diameter
• Three-wire configuration for optimal signal transmission
• Wiring harness length of 17.75 inches for proper installation

Details on the Direct Fit Oxygen Sensor Line

The NTK Direct Fit Oxygen Sensor line focuses on providing exact replacement sensors tailored to specific vehicle applications. This approach eliminates the need for modifications during installation and ensures compatibility with the vehicle’s existing wiring and mounting points. The 24521 part number is part of this line, offering a direct replacement solution for models such as the Nissan 300ZX, Infiniti I30, and Mercury Villager.

Product Specifications and Features

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving emission control efficiency. The sensor’s three-wire design supports both the sensor signal and heater circuit, while the 18mm threaded mounting ensures a secure fit in the exhaust system. The 17.75-inch wiring harness length provides sufficient reach for proper connection without excess slack.

Compatible Vehicles and Applications

• Nissan 200SX, 300ZX, Frontier, G20, Maxima, NX, Pathfinder, Sentra, Xterra
• Infiniti I30, Q45, QX4
• Mercury Villager, Quest

Common Issues Addressed by Oxygen Sensor 24521

• Engine performance problems due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy caused by inefficient combustion
• Rough idling or hesitation during acceleration

Installation Notes and Tips

When installing the NTK Direct Fit Oxygen Sensor 24521, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector match the vehicle’s specifications before installation. Thread the sensor by hand initially to prevent cross-threading, then tighten to manufacturer torque specifications.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet OEM standards for fit, form, and function. The Direct Fit Oxygen Sensor 24521 undergoes rigorous testing to ensure durability and accurate sensor readings. While specific warranty details are not provided here, NTK typically offers coverage against defects in materials and workmanship.