NTK 21002 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of NTK Direct Fit Oxygen Sensor 21002

The NTK Direct Fit Oxygen Sensor 21002 is designed for precise emission control in a range of GM and other compatible vehicles. This specific-fit, non-heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions compliance.

• Wiring harness length: 15.25 inches for easy connection
• Non-heated sensor type for direct fit applications
• Single wire configuration
• Thread diameter: 18 mm for secure threaded mounting
• Specific fitment for select Buick, Chevrolet, GMC, Jeep, and other models

About the Direct Fit Oxygen Sensor Product Line

The NTK Direct Fit Oxygen Sensor line is engineered to provide exact replacement sensors that match OEM specifications. These sensors are designed for direct installation without modification, ensuring reliable performance and compatibility. The 21002 part number belongs to this line, offering a non-heated sensor option with a threaded mounting type and a 15.25-inch wiring harness, tailored for specific vehicle applications.

Detailed Product Description

This NTK oxygen sensor features a non-heated sensor element with a single wire, making it suitable for vehicles that do not require heated sensors. The 18 mm threaded mounting ensures a secure and proper fit in the exhaust system. With a wiring harness length of 15.25 inches, the sensor provides sufficient reach for straightforward installation. The sensor is designed specifically for a wide range of vehicles including Buick, Cadillac, Chevrolet, Geo, GMC, Isuzu, Jeep, Oldsmobile, Pontiac, and Suzuki models such as the Camaro, Blazer, Grand Prix, and Wrangler.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in compatible GM and related vehicles
• Helps resolve engine performance issues related to incorrect air-fuel mixture readings
• Assists in reducing emissions and passing state emissions inspections
• Prevents check engine light triggers caused by sensor malfunctions
• Supports fuel efficiency by providing accurate exhaust gas data

Installation Notes and Tips

• Ensure vehicle compatibility by verifying make, model, and year before installation
• Use proper tools to remove the old sensor and install the new 18 mm threaded sensor securely
• Handle the sensor carefully to avoid damage to the wiring harness or sensor tip
• Check for exhaust leaks after installation to maintain sensor accuracy
• Follow vehicle manufacturer torque specifications for sensor installation

Quality Assurance and Warranty

NTK oxygen sensors are manufactured to meet strict quality standards for durability and performance. The Direct Fit Oxygen Sensor 21002 is tested to ensure reliable operation within specified parameters. While specific warranty details are not provided here, NTK typically offers coverage against manufacturing defects. Consult product documentation or NTK resources for warranty terms.