Rugged Emissions Control for Oshkosh Vehicles: Cummins DEF Head Unit
What is it?
The Oshkosh Cummins DEF Head Unit is an emissions control module tailored to Oshkosh-built vehicles—such as military trucks, heavy-duty logistics platforms, or defense-grade apparatus—powered by Cummins ISB, B6.7, or ISL engines. It accurately meters Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce nitrogen oxides (NOx) and uses built-in sensors to monitor fluid level, temperature, and pressure for consistent dosing and system integrity.
Why choose an Oshkosh-specific DEF Head Unit?
Designed specifically for Oshkosh chassis integrated with Cummins engines, this DEF Head Unit offers plug‑and‑play fitment with factory wiring and ECM calibration. OEM-aligned performance helps prevent SCR fault codes, engine derates, or dosing inconsistencies common with non-OEM solutions. Its rugged construction is ideal for high-demand environments—such as military deployments, emergency response, or industrial applications—where reliability is mission-critical.
Key Benefits
✅ Direct-fit solution for Oshkosh equipment running Cummins ISB, B6.7, or ISL engines
✅ Precision regulation of DEF dosing to maximize NOx reduction
✅ Real-time monitoring via sensors for fluid level, temperature, and pressure
✅ Engineered to resist DEF crystallization, vibration, dust ingress, and thermal stress
✅ Minimizes risk of SCR system errors, limp-mode activation, and compliance failures
Applications
Ideal for Oshkosh tactical vehicles, utility trucks, defense transports, and industrial platforms powered by Cummins engines. This DEF Head Unit ensures clean emissions and SCR compliance during mission-critical operations and long-term duty cycles in rugged terrain or harsh environments.
Installation Notes
Power down the vehicle and depressurize the DEF system before removal. Clean the DEF tank and lines to eliminate residue or crystal buildup. Install the OEM DEF Head Unit using factory-aligned connectors, securing all fluid and electrical fittings. After installation, clear any diagnostic codes and verify DEF dosing and sensor performance using a diagnostic tool.
Final Thoughts
If your Oshkosh vehicle equipped with a Cummins engine is showing DEF dosing faults, SCR system warnings, or reduced reliability, the Oshkosh-specific DEF Head Unit is the dependable OEM-grade solution. Engineered for direct compatibility and durability in tough conditions, it restores emissions performance and operational readiness. Available now at Tamerx—when reliability is your requirement.