SCR / DEF / DPF Emulator for Detroit Diesel® GHG21 Engines DD13, DD15
SKU: 24533322402018
€800,00 excl. VAT
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VAT still charged? Contact us before paying.- Worldwide shipping — DHL / DPD / UPS, dispatch in 24h
- 2-year warranty on all delete kits
- Technical support for installation (WhatsApp)
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All prices quoted include 23% EU VAT.
1. For orders shipped outside the European Union, VAT is not charged (0% VAT applies).
2. For orders placed within the European Union, VAT is not charged (0% VAT rate applies) if a valid EU VAT number is provided during the checkout process.
Product Description
SCR / DEF / DPF Emulator – Detroit Diesel® GHG21 (ACM3 | Plug & Play | 2021+)
Professional Plug & Play emulator designed for trucks equipped with Detroit Diesel® GHG21 engines, used in vehicles manufactured from 2021 onward.
This advanced device fully emulates the SCR / DEF / DPF aftertreatment system and acts as a direct replacement for the ACM3 control module, ensuring uninterrupted truck operation while preventing downtime caused by emission system failures.
Manufactured in Europe using high-quality industrial components, each unit undergoes strict testing and quality control before shipment.
Key Features
- Complete SCR / DEF / DPF system emulation
- Direct replacement for ACM3 Aftertreatment Control Module
- Quick Connect Plug & Play installation
- Waterproof design for harsh operating environments
- Industrial-grade electronic components
- Compact and durable construction
Emulated Aftertreatment Components
- NOx sensor upstream
- NOx sensor downstream
- Exhaust temperature sensors
- DEF pump
- DPF system
- DEF level / quality sensor
- ACM3 control unit
Compatible Engines
- DD5 GHG21
- DD7 GHG21
- DD13 GHG21
- DD15 GHG21
- DD16 GHG21
Compatible Trucks
Freightliner® Trucks
- Freightliner® Cascadia
- Freightliner® M2 106
- Freightliner® M2 112
✔ Models manufactured from 2021
Western Star® Trucks
- Western Star® 4700
- Western Star® 4800
- Western Star® 4900
- Western Star® 5700
✔ Models manufactured from 2021
Installation Overview
⚠ Important:
Before connecting the emulator, it is necessary to disable the derate mode and perform the service routine “DPF Ash Accumulator”.
Installation Steps
- Disconnect the connector from the ACM3 unit.
- Connect the emulator in place of the ACM connector.
- The original ACM module can be removed or left in place.
- Since the emulator replaces the DPF system, the DPF filter must be removed or drilled through.

Advantages
- Eliminates SCR / DEF / DPF system faults
- Prevents engine derate and vehicle downtime
- No DEF (AdBlue®) consumption
- No Diagnostic Trouble Codes (DTC)
- Reliable operation in demanding environments
- Fast Plug & Play installation
The Set Includes
- SCR / DEF / DPF Emulator for Detroit Diesel® GHG21 – 1 pc
- Installation manual
If you are unsure about compatibility, please contact info@bluetruck24.eu with your vehicle details or VIN number and we will verify compatibility for you.
Legal Notice
All trade names, logos, brands, and trademarks used in this material are the property of their respective owners. They are used solely for informational and identification purposes to indicate product compatibility.
Detroit Diesel®, Freightliner®, and Western Star® are registered trademarks of their respective owners in the United States, the European Union, and other countries. The manufacturer of the offered device is not affiliated with, endorsed by, or authorized by Detroit Diesel Corporation, Daimler Truck North America LLC, or any of their affiliated companies.
Adblue® is a legally protected registered trademark of VDA Verband der Automobilindustrie e.V.
Important Notice
Emulators and fault-code reset devices may be subject to restrictions or may not be permitted for use on public roads in certain countries and jurisdictions. Before purchasing, installing, or using the device, the user is responsible for familiarizing themselves with all applicable laws, regulations, and emissions requirements applicable in the location where the vehicle or machine is operated.
The user bears full responsibility for ensuring that the product is used in compliance with all applicable laws and regulations.
AdBlue® is a registered trademark of the Verband der Automobilindustrie (VDA). It is a high-purity aqueous urea solution used in the Selective Catalytic Reduction (SCR) system to clean exhaust gases. When injected into the exhaust stream, AdBlue® helps convert harmful nitrogen oxides (NOx) into harmless nitrogen and water vapor. This reduction process occurs via a dedicated injector that sprays the urea solution into the exhaust system. The use of AdBlue® enables vehicles over 3.5 tonnes to comply with strict Euro 4, Euro 5, and Euro 6 emission standards established by the European Union.
By installing a specialized SCR emulator, the vehicle continues to display all standard SCR parameters during diagnostics, identical to those of a fully operational system. The emulator sends the same signals to the engine control unit (ECU) as a functioning SCR system would, effectively preventing fault codes and failure modes caused by SCR-related issues. With this device, users can eliminate all SCR-related errors, and the physical SCR system can either be completely removed or left in place as a non-functional component.
The device functions like a diagnostic computer — specifically, it performs the "Clear Fault Codes" function. It was designed to allow drivers to clear the 20 km/h "limp mode" that occurs when the SCR system fails. In such cases, the driver can simply plug the device into the diagnostic port and clear the speed restriction fault at any time — independently and without the need for expensive towing services. Once the fault is cleared, the vehicle can be driven at normal speed to a service center or back to base for proper repair. In today's conditions, a fault code clearer is an essential tool for any Euro 6 vehicle.
Yes, we offer worldwide shipping via reliable carriers like DHL, UPS, and FedEx. Delivery times vary by location but typically range from 2-5 business days.
We offer a 2-year warranty on all our emulators. If you experience any issues, our technical support team will help diagnose and resolve the problem, or we will replace the unit.
We support a wide range of trucks and heavy machinery including Volvo, Renault, MAN, Scania, DAF, Iveco, Mercedes-Benz, and many others. Check our shop categories for specific models.