In Stock SKU: HE-20069

Mack NOx Sensor Emulator (SCR / NOx Signal Simulation)

Plug-in NOx sensor emulator for Mack heavy-duty trucks that simulates SCR sensor signals, permanently clearing fault codes and limp mode to keep the truck earning on the road.

250 $
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Mack Anthem and Pinnacle tractor-units, powered by MP7 and MP8 engines, are built for sustained heavy-haul work across long distances — but the SCR system's NOx sensors face relentless heat and exhaust exposure at those hours. When an upstream or downstream sensor fails, the ECU misreads exhaust chemistry, a fault lamp illuminates on the dash and the truck is throttled into limp mode, losing torque and top speed on the highway. That unplanned performance drop disrupts delivery schedules and drives up operating costs. Genuine NOx sensors for heavy-duty applications are expensive, and lead times add further delays. The Mack NOx Sensor Emulator eliminates sensor-driven faults permanently and without costly parts.

How Does It Work?

The emulator plugs directly into the SCR system's NOx sensor connector on the Mack engine via the factory socket — no wire cutting, no soldering and no workshop required. Once live, it continuously generates valid upstream and downstream NOx signal values, sensor warm-up status and ready-state feedback that mirror what a healthy sensor produces. The engine ECU accepts this data as genuine, raises no NOx sensor fault codes and never activates power-restriction mode.

NOx-sensor fault lamps and dashboard warnings are permanently cleared
The tractor-unit stays out of limp mode — full torque and highway speed are maintained on every run
The cost of an expensive OEM NOx sensor replacement is eliminated
The risk of being stranded mid-highway due to sudden power loss is removed
Recurring sensor-related downtime across fleet vehicles is significantly reduced
Mack trucks maintain consistent, dependable performance on demanding long-haul routes

Frequently Asked Questions

Which Mack vehicles is this emulator compatible with?

It is compatible with Mack tractor-unit and truck models equipped with SCR and NOx sensor systems. We recommend verifying your vehicle's engine and ECU type via OBD diagnostic tool or service records before ordering.

How long does installation take?

Installation is plug-and-play — the emulator connects to the NOx sensor connector directly. No wire cutting or soldering is required and the job is typically done in minutes.

Is the device reversible?

Yes. Because the emulator uses the original factory connector, removing it returns the vehicle to its stock factory state with no permanent hardware modification.

What legal considerations apply?

Modification of emissions systems on road-going vehicles may be subject to local regulations. This product is supplied for closed-course, off-road, testing and diagnostic purposes; legal responsibility rests with the user.