NTK 21086 Oxygen Sensor - Downstream

Direct-Fit Downstream Oxygen Sensor

NTK Oxygen Sensor 21086 is a direct-fit, specific-application replacement built for downstream emission control service. It uses a heated, threaded design with a 4-wire layout and an 18 mm thread diameter for a precise OE-style installation.

Key Features

• Direct-fit oxygen sensor for specific applications
• Heated sensor design for faster operating response
• Threaded mounting with 18 mm thread diameter
• 4-wire configuration with 8.75 in. harness length
• NTK Direct Fit Oxygen Sensor line for OE-style replacement

Detailed Description

NTK 21086 is engineered as a downstream oxygen sensor for select Chevrolet Camaro, Chevrolet Colorado, GMC Canyon, Buick LaCrosse, Cadillac ATS, Cadillac CTS, and Cadillac CT6 applications. As part of the NTK Direct Fit Oxygen Sensor line, it is built to match the original sensor style and connection requirements for the listed vehicles, including 2021-2023 Chevrolet Camaro and 2021-2022 Chevrolet Colorado and GMC Canyon applications. This part cross-references GM 12683553 for the same application.

NTK is known for oxygen sensor manufacturing and uses ceramic-based technology and production testing to support fit, form, and function. The sensor is designed for emission control service where accurate downstream signal monitoring is required on compatible GM platforms such as the Chevrolet Camaro and GMC Canyon.

What It Is Used For

• Replacing a worn or failed downstream oxygen sensor
• Restoring proper exhaust gas monitoring
• Addressing check engine light concerns related to sensor performance
• Correcting drivability issues tied to inaccurate oxygen sensor readings
• Maintaining emission control system operation

Installation Notes and Tips

Verify the connector, thread size, and downstream location before installation. Use the vehicle application listing to confirm the correct year, make, and model match for your Chevrolet Camaro, Colorado, or GMC Canyon service job. The threaded design supports direct replacement on the listed applications.

Quality Assurance

NTK tests these oxygen sensors during manufacturing to help ensure quality and reliability that meet or exceed OE specifications. The brand is part of the NGK family of products and is recognized as a major supplier of original equipment oxygen sensors.