Description
Product Overview
Part Name: Nitrogen NOx Oxygen Sensor (Outlet Position)
Part Numbers: 5WK96645H, 12669595, 12671388
Vehicle Compatibility: GM Diesel Vehicles (US Models) – Designed for Tier 4 emission-compliant Chevrolet Silverado HD, GMC Sierra HD, and other GM Duramax diesel engines (2014–2024)
Configuration: OEM-style outlet NOx sensor constructed for precision exhaust gas monitoring. Built with high heat tolerance and vibration resistance to ensure stable performance in heavy-duty diesel applications.
Function: Measures nitrogen oxide levels downstream of the SCR catalyst, transmitting data to the ECU for accurate DEF dosing and SCR system management. Maintains compliance with U.S. EPA emission standards and enhances combustion efficiency.
Technical Specifications
Type: Nitrogen Oxide (NOx) Oxygen Sensor – Outlet
Material: Stainless-steel sensor body with ceramic sensing core and heat-shielded wiring harness
Application: Fits GM Tier 4 diesel engines (2014–2024) using NOx sensor references 5WK96645H / 12669595 / 12671388
Cross-Reference: Equivalent to GM OE part numbers above; compatible with OEM SCR and DEF emission control systems in Chevrolet and GMC diesel vehicles
Installation: Direct-fit replacement; installs into OEM exhaust location and connects seamlessly to factory wiring harness
Service Interval: Replace when NOx fault codes (P2201, P229F) appear, or when SCR efficiency or DEF usage becomes inconsistent
Delivery & Availability
Stock Options: High-quality aftermarket GM NOx sensors available
Delivery Time: 3–7 days internationally
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