NTK 21061 Oxygen Sensor - Downstream Left or Downstream Right

Overview of NTK Direct Fit Oxygen Sensor 21061

The NTK Direct Fit Oxygen Sensor 21061 is designed for precise emission control in select GM vehicles. This heated oxygen sensor offers a specific fit for Cadillac CTS, Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD, and Hummer H2 models, ensuring reliable performance and accurate readings.

• Heated oxygen sensor for faster response times
• Specific fit for Cadillac CTS, Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD, and Hummer H2
• Threaded mounting type with 18mm thread diameter
• Four-wire design for enhanced signal accuracy
• 21.75-inch wiring harness length for optimal installation

Details on the Direct Fit Oxygen Sensor Line

The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors tailored to specific vehicle applications. This product line focuses on delivering sensors that match OEM specifications, including wiring harness length, thread size, and connector type. The 21061 sensor maintains these standards to ensure compatibility and ease of installation in the designated GM models.

Product Specifications and Features

This oxygen sensor features a heated element to reduce warm-up time, improving fuel efficiency and emissions control. The 18mm threaded mounting type allows for secure installation in the exhaust system. With four wires, the sensor supports both the heating element and signal transmission, enhancing sensor accuracy. The 21.75-inch wiring harness length provides sufficient reach for proper connection without excess slack.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for engine control units
• Helps resolve check engine light issues related to oxygen sensor faults
• Improves fuel economy by ensuring proper combustion monitoring
• Reduces harmful emissions by maintaining optimal sensor function
• Prevents drivability problems caused by faulty oxygen sensors

Installation Notes and Tips

When installing the NTK 21061 oxygen sensor, ensure the vehicle is compatible with this specific part number. The threaded mounting requires proper torque to avoid damage. Verify the wiring harness length and connector match the vehicle’s factory setup. It is recommended to use anti-seize compound on the threads to facilitate future removal.

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet strict quality standards for durability and performance. The Direct Fit Oxygen Sensor 21061 undergoes rigorous testing to ensure reliable operation in the specified Cadillac, Chevrolet, GMC, and Hummer models. Warranty coverage details should be confirmed with the product documentation or supplier.