TorqueDrive Downstream NOx Sensor (After SCR) — Replaces 12642311
Engineered for the 6.6L Duramax diesel exhaust system, this sensor installs after the Selective Catalytic Reduction (SCR) catalyst to monitor post-treatment NOx levels. A precise downstream reading helps optimize DEF dosing, maintain emission compliance, and keep your truck or van running at peak efficiency.
Direct-Fit Replacement: Built to OEM specs for an easy swap with factory connectors and harness length; no splicing required.
Stable Readings: Fast-response element delivers accurate NOx data to support proper SCR function and reduced emissions.
Durable Construction: High-temperature housing and sealed electronics resist heat, vibration, corrosion, and road splash.
Plug-and-Play: Installs in minutes with common hand tools; downstream (after SCR) location.
Interchange: Replaces part number 12642311.
Compatible Vehicle Applications (U.S./Canada Models):
For 2010-2015 Chevrolet Express 2500 6.6L Diesel
For 2010-2015 Chevrolet Express 3500 6.6L Diesel
For 2010-2015 Chevrolet Express 4500 6.6L Diesel
For 2011-2014 Chevrolet Silverado 2500HD 6.6L Diesel
For 2011-2014 Chevrolet Silverado 3500HD 6.6L Diesel
For 2010-2015 GMC Savana 2500 6.6L Diesel
For 2010-2015 GMC Savana 3500 6.6L Diesel
For 2010-2015 GMC Savana 4500 6.6L Diesel
For 2011-2014 GMC Sierra 2500HD 6.6L Diesel
For 2011-2014 GMC Sierra 3500HD 6.6L Diesel
Note: This is the downstream (after SCR) NOx sensor. If you need the upstream sensor, verify position before ordering. Always confirm fit by year, make, model, and 6.6L diesel engine.
Brand: TorqueDrive — Premium Replacement Parts for Reliable Performance