TorqueDrive Downstream NOx Sensor (After SCR) — designed as a direct replacement for the factory-installed sensor located after the Selective Catalytic Reduction (SCR) unit on 6.6L Duramax diesel engines. This sensor monitors post-SCR NOx levels to ensure optimal DEF injection and emissions control performance.
Direct Fit Replacement: Built to OEM specifications for easy installation and reliable operation — no modifications required.
Improves Fuel Efficiency & Emissions: Precisely measures NOx levels after the SCR system to help your vehicle maintain peak performance and stay emission-compliant.
Durable Construction: Manufactured from high-temperature-resistant materials and fully sealed against corrosion and moisture.
Plug-and-Play Design: Includes factory-style connector for quick, secure installation.
Replaces Part Number: 12718676
Compatible Vehicle Applications:
For 2017 Chevrolet Silverado 2500HD 6.6L Diesel
For 2017 Chevrolet Silverado 3500HD 6.6L Diesel
For 2018 Chevrolet Silverado 2500HD 6.6L Diesel
For 2018 Chevrolet Silverado 3500HD 6.6L Diesel
For 2019 Chevrolet Silverado 2500HD 6.6L Diesel
For 2019 Chevrolet Silverado 3500HD 6.6L Diesel
For 2017 GMC Sierra 2500HD 6.6L Diesel
For 2017 GMC Sierra 3500HD 6.6L Diesel
For 2018 GMC Sierra 2500HD 6.6L Diesel
For 2018 GMC Sierra 3500HD 6.6L Diesel
For 2019 GMC Sierra 2500HD 6.6L Diesel
For 2019 GMC Sierra 3500HD 6.6L Diesel
Note: This is the after-SCR (downstream) NOx sensor located behind the catalytic reduction unit. Please verify your vehicle's position before ordering.
Brand: TorqueDrive — Premium Replacement Parts for Reliable Performance