NTK 21067 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Direct Fit Oxygen Sensor Overview

The NTK 21067 is a direct fit heated oxygen sensor built for specific downstream applications. It uses a threaded mounting design, a 4-wire layout, and a 15-inch harness length for a precise replacement on supported vehicles.

• Direct fit oxygen sensor for specific applications
• Heated sensor design for faster operating readiness
• 4-wire configuration with threaded mounting
• 15-inch wiring harness length
• NTK 21067 replacement part number

Fitment Details

Compatible with 2011-2014 Buick Verano, downstream; 2011-2012 Chevrolet Express 3500, downstream left and downstream right; 2011-2012 Chevrolet Express 4500, downstream left and downstream right; 2011-2012 GMC Savana 3500, downstream left and downstream right; 2011-2012 GMC Savana 4500, downstream left and downstream right; and 2011 Saab 9-5, downstream.

For Chevrolet Express 3500, Chevrolet Express 4500, GMC Savana 3500, and GMC Savana 4500 applications, the notes identify B1S2 or B2S2 downstream positions and female connector configurations. Verify the connector style and sensor location before installation. The NTK 21067 is also referenced by part number 21067 in catalog listings.

Common Replacement Uses

• Replacing a worn downstream oxygen sensor
• Addressing sensor fault codes related to mixture monitoring
• Restoring proper exhaust feedback for engine management
• Correcting connector or harness mismatch on specific applications

Installation Notes

Confirm the threaded mounting type, wire count, harness length, and downstream position before ordering. Match the vehicle-specific notes for B1S2 or B2S2 locations where listed. Use the existing connector and sensor routing as a reference during installation.

Quality Assurance

NTK states that these oxygen sensors are extensively tested during manufacturing and built to meet or exceed OE specifications. The brand is part of the NGK family and is recognized as a major original equipment oxygen sensor supplier.