NTK 21075 Oxygen Sensor - Downstream Left or Downstream Right

Overview of NTK Direct Fit Oxygen Sensor 21075

The NTK Direct Fit Oxygen Sensor 21075 is designed specifically for select Cadillac, Chevrolet, and GMC vehicles. This heated oxygen sensor features a threaded mounting type and a 13.25-inch wiring harness, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for accurate exhaust gas monitoring
• Specific fit for Cadillac Escalade, Chevrolet Silverado, GMC Sierra, and more
• Threaded mounting with 18mm thread diameter for secure installation
• Four-wire design for enhanced sensor functionality
• 13.25-inch wiring harness length for optimal connection

Detailed Product Description

The NTK Direct Fit Oxygen Sensor 21075 is engineered to meet the exact specifications of various GM vehicles, including the Cadillac Escalade and Escalade ESV, Chevrolet Silverado 1500 and 2500 HD, and GMC Sierra 1500 and 3500 HD models. This sensor is a heated type, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The four-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance under varying engine conditions. With a threaded mounting type and an 18mm thread diameter, installation is straightforward and secure. The 13.25-inch wiring harness length provides sufficient reach for direct connection without modification.

About the NTK Direct Fit Oxygen Sensor Line

The Direct Fit Oxygen Sensor line by NTK is designed to provide precise replacement parts that match OEM specifications. These sensors are tailored for specific vehicle makes and models, eliminating the need for splicing or adapting wiring harnesses. The 21075 part number is part of this line, offering a direct replacement solution for emission control sensors in select Cadillac, Chevrolet, and GMC vehicles.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for engine control units
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel economy by providing accurate exhaust gas data
• Reduces harmful emissions by ensuring efficient combustion
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure vehicle compatibility with the NTK 21075 oxygen sensor before installation
• Use appropriate tools for threaded sensor removal and installation to avoid damage
• Check wiring harness length (13.25 inches) for proper routing and connection
• Verify four-wire connections correspond to sensor and heater circuits
• Follow vehicle manufacturer torque specifications for sensor mounting

Quality Assurance and Warranty

NTK oxygen sensors undergo rigorous testing to meet OEM standards for durability and performance. The Direct Fit Oxygen Sensor 21075 is manufactured to provide reliable operation within emission control systems. Warranty coverage details should be confirmed with the product supplier or manufacturer documentation.