NTK 21082 Oxygen Sensor

Direct-Fit Oxygen Sensor for GM Applications

NTK 21082 is a direct-fit heated oxygen sensor built for specific applications with threaded mounting and a 4-wire design. It is engineered for accurate exhaust feedback and OE-style fitment in Buick Regal Sportback, Buick LaCrosse, and Chevrolet Volt applications.

• Direct-fit design for specific applications
• Heated oxygen sensor with 4-wire construction
• Threaded mounting with 18 mm thread diameter
• 10.25 in. wiring harness length
• Compatible with upstream and downstream sensor locations listed in fitment

Fitment and Application Details

Fits 2018-2020 Buick Regal Sportback, upstream right; upstream left; downstream right; downstream left. Fits 2017-2019 Buick LaCrosse, upstream right; upstream left; downstream right; downstream left. Fits 2018-2019 Chevrolet Volt, upstream.

This part cross-references GM 12669969 for the same application.

NTK’s Direct Fit Oxygen Sensor line focuses on OE-style replacement parts with streamlined coverage and application-specific design. As part of the NGK family, NTK combines ceramic manufacturing expertise with oxygen sensor production to support consistent fit, form, and function.

What It Helps Address

• Faulty oxygen sensor readings
• Check engine light concerns related to sensor performance
• Fuel control issues caused by inaccurate exhaust feedback
• Emissions test failures tied to sensor response problems

Installation Notes and Quality

Use the listed fitment and sensor location to confirm application before installation. The threaded design and specific-fit configuration support direct replacement on the vehicles shown. NTK states these oxygen sensors are extensively tested during manufacturing to meet or exceed OE specifications.