Operational Emissions Assurance: Oshkosh Cummins DEF Head Unit
What is it?
The Oshkosh Cummins DEF Head Unit is a critical SCR (Selective Catalytic Reduction) system component installed in Oshkosh tactical, military, and industrial vehicles powered by Cummins ISB, B6.7, or ISL engines. It controls DEF delivery to reduce NOx emissions while sensors monitor fluid level, temperature, and pressure—ensuring consistent emissions performance even under mission-critical conditions.
Why choose this OEM DEF Head Unit?
Specifically tailored for Oshkosh chassis with Cummins powertrains, this OEM module integrates seamlessly with existing ECM wiring—no modifications required. It ensures reliable DEF delivery and helps prevent dosing irregularities, SCR error codes, and engine derates that are common challenges with aftermarket replacements. Dependable in rugged environments, it supports operational readiness and emissions compliance.
Key Benefits
✅ Plug-and-play OEM fit compatible with Oshkosh vehicles using Cummins engines
✅ Steady DEF flow supports NOx reduction standards effectively
✅ Real-time sensor tracking of fluid level, temperature, and pressure
✅ Resistant to vibration, thermal changes, moisture, and DEF crystallization
✅ Lowers the likelihood of SCR malfunctions, limp-mode engagements, and service interruptions
Applications
Ideal for Oshkosh heavy-duty trucks, military transports, airport service vehicles, and specialty platforms powered by Cummins ISB/B6.7/ISL engines. Supports continuous-duty cycles and extreme operating environments where emissions function cannot fail.
Installation Notes
Before servicing, shut down the system and relieve DEF system pressure. Clean the DEF tank and connector surfaces to remove any residue or crystals. Install the unit with factory connectors and firmly secure all fluid and electrical connections. Once installed, reset active codes and verify DEF dosing and sensor feedback using diagnostic equipment.
Final Thoughts
If your Oshkosh vehicle is tallying DEF system alerts, SCR errors, or dosing inconsistencies, this OEM DEF Head Unit delivers the reliability you need. Tested in harsh conditions—designed for mission-critical performance and emissions control—available now at Tamerx to keep your fleet operational and compliant.