DEF System Precision for Kalmar Ottawa – OEM DEF Head Unit (90035882)
What is it?
The OEM 90035882 DEF Head Unit is a factory-grade header assembly designed for Kalmar Ottawa machines equipped with Cummins ISL engines that use DEF (Diesel Exhaust Fluid) systems. This unit mounts to the DEF tank and houses sensors for fluid level, temperature, and other parameters essential for accurate SCR (Selective Catalytic Reduction) operation.
Why choose this OEM DEF Head Unit?
Engineered to meet original Cummins and Kalmar performance standards, this DEF Head Unit ensures proper sensor calibration, reliable sealing, and compatibility with existing DEF‑and‑SCR control systems. Choosing the genuine component helps you avoid false DEF warnings, sensor faults, leaks, or SCR system interruptions that often come with aftermarket or mismatched units.
Key Benefits
✅ Direct-fit for Kalmar Ottawa machines with Cummins ISL engines
✅ Precise monitoring of DEF fluid level and temperature
✅ Sealed architecture to prevent leaks and maintain fluid integrity
✅ Compatible with factory diagnostics and SCR control logic
✅ Built for durability in industrial and terminal environments
Applications
Primarily used in Kalmar Ottawa container handlers, terminal tractors, and port equipment powered by Cummins ISL engines with DEF systems. This part is essential where continuous operation and emissions compliance are required under heavy-duty, high-cycle environments.
Installation Notes
Installation should be performed by a qualified technician. Begin by depressurizing or isolating the DEF system. Clean the DEF tank opening and ensure sealing surfaces are free of debris or damage. Replace any worn O‑rings or gaskets before mounting. Install the head unit using OEM torque specifications. After installation, verify sensor outputs using diagnostic tools, inspect for leaks, and clear any DEF or SCR system fault codes to confirm correct operation.
Final Thoughts
If your Kalmar Ottawa machine is experiencing DEF sensor errors, inaccurate fluid readings, or SCR warnings, the OEM 90035882 DEF Head Unit offers the factory-accurate solution. With correct sensor behavior, secure sealing, and full system compatibility, it helps restore dependable DEF functionality and emissions compliance.