Heavy-Duty Emissions Control: Liugong Cummins ISB 6.7 L DEF Head Unit
What is it?
The Liugong Cummins ISB 6.7 L DEF Head Unit is a high-precision emissions control module integrated into the Selective Catalytic Reduction (SCR) system of Liugong construction and earthmoving equipment powered by Cummins ISB 6.7 L engines. It accurately meters Diesel Exhaust Fluid (DEF) into the exhaust stream to convert nitrogen oxide (NOx) pollutants into clean emissions. Built-in sensors continuously monitor fluid level, temperature, and pressure, ensuring reliable dosing even in the most demanding work environments.
Why choose a Liugong-specific DEF Head Unit?
Custom-engineered for Liugong chassis and Cummins ISB engines, this OEM-calibrated module offers plug-and-play compatibility and precise ECM integration. Unlike generic replacements, it helps eliminate DEF dosing discrepancies, SCR fault codes, and engine derates—ensuring emissions compliance during high-duty cycles on site.
Key Benefits
✅ Direct-fit compatibility with Liugong equipment powered by Cummins ISB 6.7 L
✅ Precision metering ensures optimal NOx reduction and emissions control
✅ Real-time monitoring of DEF fluid level, temperature, and pressure via integrated sensors
✅ Engineered to resist DEF crystallization, vibration, dust, and thermal cycling
✅ Minimizes SCR-related errors and reduces unscheduled downtime
Applications
Ideal for Liugong excavators, loaders, material handlers, and cranes powered by Cummins ISB 6.7 L engines. This DEF Head Unit is engineered to deliver consistent emissions system performance—even through continuous operation, heavy loads, and tough working conditions.
Installation Notes
Prior to installation, power down the equipment and fully depressurize the DEF system. Clean the DEF tank and lines to eliminate residue or crystallization. Install using OEM-standard connectors and secure all fluid and electrical fittings properly. After installation, clear diagnostic codes and verify DEF dosing and sensor performance using a scan tool before returning to service.
Final Thoughts
If your Liugong machinery powered by a Cummins ISB 6.7 L engine is showing DEF system warnings, SCR faults, or inconsistent dosing behavior, this OEM-grade DEF Head Unit delivers a factory-ready solution. Durable, accurate, and emissions-compliant—it restores system integrity and keeps your equipment moving forward. Available now at Tamerx.