E-ONE Cummins ISL

Engineered for Reliability: E‑ONE Cummins ISL DEF Head Unit OEM 716838

What Is It?

This DEF Head Unit (OEM 716838) is a critical component installed in E‑ONE vehicles powered by Cummins ISL engines. It precisely delivers Diesel Exhaust Fluid into the SCR system to facilitate NOₓ reduction and ensure emissions compliance ([turn0search1]).

Why Choose OEM 716838?

Built to original Cummins and E‑ONE specifications, this unit is a direct-fit solution designed for high-usage fire apparatus like the Cyclone II and Typhoon chassis equipped with Cummins ISL engines. Its OEM-level design offers plug-and-play integration and consistency across applications ([turn0search1], [turn0search17]).

Key Benefits

✅ Designed for E‑ONE chassis with Cummins ISL engines
✅ Precise DEF metering for effective NOₓ conversion
✅ Seamlessly integrates with factory wiring and sensors
✅ Manufactured to endure high temperatures and harsh use
✅ Supports regulated aftertreatment systems without fault generation

Applications

Used in firefighting apparatus—including E‑ONE’s Cyclone II, Typhoon, and HazMat models—this DEF head unit ensures SCR system reliability in custom chassis built around Cummins ISL powerplants, typically rated up to 450 hp ([turn0search17], [turn0search15]).

Installation Notes

Installation should be performed by a qualified technician. Inspect and secure DEF lines and hose fittings before installation. After mounting, run a system diagnostic with E‑ONE or Cummins-compatible tools to clear any active codes and verify proper dosing operation.

Final Thoughts

The OEM 716838 DEF Head Unit is a durable, OEM-approved solution for maintaining emission control integrity in E‑ONE vessels equipped with Cummins ISL engines. With reliable DEF dosing and system compatibility, it minimizes downtime and supports fleet reliability under mission-critical conditions.