Driven by Reliability: Navistar/International Cummins ISB 6.7 L DEF Solution
What is it?
The Navistar/International Cummins ISB 6.7 L DEF Head Unit is a precision-engineered emissions module built specifically for medium-duty International trucks equipped with Cummins ISB 6.7 L engines. It accurately meters Diesel Exhaust Fluid (DEF) into the exhaust stream to neutralize nitrogen oxide (NOx) emissions. With integrated fluid level, temperature, and pressure sensors, it ensures consistent and accurate SCR system operation even under demanding route conditions.
Why choose this Navistar/International DEF Head Unit?
Designed for seamless integration with International truck chassis and Cummins engine controls, this OEM-spec unit delivers plug-and-play compatibility with factory ECM calibration and harness configurations. It eliminates DEF dosing irregularities, SCR diagnostic codes, and engine performance issues often caused by generic components. Built for fleet-level reliability, it delivers emissions compliance mile after mile.
Key Benefits
✅ OEM-fit compatibility for International chassis powered by Cummins ISB 6.7 L engines
✅ Precision DEF dosing optimizes NOx reduction and regulatory compliance
✅ Built-in sensors monitor fluid level, temperature, and pressure continuously
✅ Engineered to resist DEF crystallization, thermal cycling, vibration, and dust
✅ Minimizes SCR fault codes, limp-mode events, and fleet downtime
Applications
Ideal for International medium-duty trucks such as the TerraStar®, MV™, and HV Series equipped with Cummins ISB 6.7 L engines. This DEF Head Unit ensures emissions compliance and reliable SCR performance across commercial, service, and fleet-use cycles.
Installation Notes
Always disconnect power and relieve pressure in the DEF system prior to installation. Thoroughly clean the DEF tank and all connector interfaces to eliminate residue or crystallization. Install the head unit using OEM-style hookups and ensure fluid and wiring connections are fully secured. After installation, clear any active fault codes and validate DEF dosing and sensor accuracy using a diagnostic tool.
Final Thoughts
If your International truck is showing issues with DEF system alerts, dosing faults, or SCR derates, this Cummins ISB 6.7 L DEF Head Unit is the trusted OEM solution. Engineered to exact standards and built for fleet durability, it restores emissions system integrity and keeps your operation running clean—and compliant. Now available at Tamerx.