REV PARTS LLC Cummins ISL

Plug‑and‑Play DEF Monitoring for REV PARTS Cummins ISL

What Is It?

The OEM 10344986 DEF Head Unit is a factory-calibrated module remanufactured by Tamerx for use in REV PARTS LLC vehicles built on Cummins ISL chassis. This component is mounted on the DEF tank and manages fluid level, temperature, suction, and dosing via a 40‑micron filter design.

Why Choose OEM 10344986?

Built to match Cummins and REV PARTS standards, this unit offers a direct-fit replacement that plugs into the factory DEF system without modification. It comes pre-calibrated for seamless electrical integration and includes a core return for warranty coverage up to 1 million miles or 1 year. 

Key Benefits

✅ OEM-spec head unit calibrated for REV PARTS Cummins ISL chassis 
✅ Accurate DEF level, temperature, and suction measurement
✅ Built-in dosing header with 40 µm filter for cleaner fluid delivery
✅ Direct-fit with factory wiring harness—no modifications required
✅ Tamerx warranty backing (1 year or 1M miles) with core return option 

Applications

Specifically used in vehicles or apparatus equipped with Cummins ISL engines and RET PARTS LLC DEF assemblies. Ideal for municipal fleets or specialty builds that rely on precise SCR system operation and OEM emissions control.

Installation Notes

Installation must be performed by a qualified technician. Inspect the DEF tank connector, sensor harness, and fluid line for wear or contamination. After replacing the head unit, use Cummins-compatible diagnostics to clear any DEF-related codes and verify level, temperature, and flow readings are reporting correctly.

Final Thoughts

The OEM 10344986 DEF Head Unit ensures accurate, factory-grade DEF monitoring and dosing for REV PARTS Cummins ISL platforms. With plug‑and‑play integration, clean fluid filtration, and warranty assurance, it delivers reliable SCR system operation and helps keep your equipment emissions-compliant and startup-ready.