NOx Sensors

At American Radiator, we supply premium aftermarket NOx sensors built to keep heavy-duty trucks and equipment compliant, efficient, and reliable. A NOx (nitrogen oxide) sensor measures harmful exhaust emissions and communicates with the Selective Catalytic Reduction (SCR) system to ensure engines meet strict EPA standards. Many drivers ask: What does a NOx sensor do? The answer is simple—it protects performance, improves fuel economy, and keeps fleets compliant.

Our NOx sensors utilize Pulse Width Modulation (PWM) heating technology, delivering short bursts of energy rather than continuous current. This design prolongs the ceramic chip’s life and enhances accuracy. Each sensor also features a probe cap engineered to reduce contamination and distribute exhaust flow evenly for consistent readings.

Customers often wonder: Are aftermarket NOx sensors as reliable as OEM? Absolutely. Our sensors include enhanced programming to accommodate OEM updates and are direct OEM replacements verified by part number. They are brand new, never remanufactured, and come with no core charge, saving fleets money while ensuring dependable operation.

When it comes to emissions-compliant, cost-effective NOx sensors, trust American Radiator—a proven partner for fleet operators, diesel technicians, and heavy-duty truck owners nationwide.