Rosenbauer Cummins

Reliable DEF Head Unit Built for Rosenbauer Fire Apparatus

What Is It?

The OEM 8604149‑S02 DEF head unit is a remanufactured component (Tamerx part number 5410‑18‑FA01‑7) specifically built for Rosenbauer vehicles using Cummins engines. It features a 40 µm DEF header and supports DEF fluid level, temperature, and doser system monitoring within SCR systems. It's backed by a 1‑million‑mile or 1‑year warranty. 

Why Choose OEM 8604149‑S02?

Produced to Cummins and Rosenbauer specifications, this unit plugs directly into the factory DEF tank and wiring harness without modification. Its remanufactured core delivers accurate calibration and system reliability—ideal for mission-critical fire and rescue vehicles. 

Key Benefits

✅ Direct-fit for Rosenbauer/Cummins setups—factory-matched compatibility
✅ Precise DEF level and temperature tracking
✅ Integrated 40 µm filter header for clean DEF distribution
✅ No modifications required—OEM plug-and-play design
✅ Backed by Tamerx warranty and core program 

Applications

This DEF head unit is tailored for Rosenbauer fire trucks and emergency apparatus powered by Cummins engines with SCR systems. Designed to withstand rigorous service environments, it supports consistent DEF delivery and emissions regulation compliance.

Installation Notes

Have a qualified technician carry out the installation. Inspect DEF tank fittings and harness connectors before installing. After mounting the unit, initiate a full DEF system diagnostic to verify sensor readings and clear any fault codes.

Final Thoughts

The OEM 8604149‑S02 DEF Head Unit delivers dependable DEF management and system accuracy custom-tailored for Rosenbauer/Cummins fleets. With OEM-grade fitment and warranty-backed reliability, it helps ensure emissions control systems remain operational and compliant in high-demand scenarios.