REV Group Cummins ISL

Precision Emissions Control: REV Group Cummins ISL DEF Head Unit

What is it?
The REV Group Cummins ISL DEF Head Unit is a critical component in the Selective Catalytic Reduction (SCR) system used in REV Group vehicles powered by Cummins ISL diesel engines. It precisely regulates the injection of Diesel Exhaust Fluid (DEF) into the exhaust stream to neutralize nitrogen oxides (NOx), and includes built-in sensors for fluid level, temperature, and pressure to keep the emissions system performing reliably.

Why choose a REV Group-specific DEF Head Unit?
Engineered specifically for the unique build and control architecture of REV Group chassis using Cummins ISL engines, this DEF Head Unit offers perfect integration with factory ECM calibration. It delivers accurate DEF dosing under real-world operating conditions and prevents DEF system faults, engine derates, or SCR malfunction codes. OEM-grade quality and fitment mean no guesswork, no modifications, only dependable emissions control.

Key Benefits
✅ Direct-fit solution for REV Group vehicles with Cummins ISL engines
✅ Precisely controls DEF injection for effective NOx reduction
✅ Built-in sensors monitor fluid level, temperature, and pressure
✅ Constructed to resist crystallization, moisture, and vibration
✅ Helps prevent SCR-related error codes, limp mode, and emissions failures

Applications
This DEF Head Unit is designed for REV Group-built commercial and specialty vehicles equipped with Cummins ISL engines—commonly found in emergency apparatus, transit vehicles, and other vocational fleet platforms. It plays a vital role in ensuring emissions compliance and operational continuity in urban and regional duty cycles.

Installation Notes
Prior to replacement, reset and depressurize the DEF system and disconnect electrical power. Clean DEF tank and fluid lines thoroughly to remove deposits or contaminants. Mount the DEF Head Unit per OEM specifications, ensuring all sensors, connectors, and fluid lines are seated securely. After installation, reset any fault codes, verify proper sensor readings, and confirm DEF dosing with a diagnostic tool.

Final Thoughts
If your REV Group vehicle is showing DEF system errors or facing SCR-related engine derates, the REV Group Cummins ISL DEF Head Unit is the dependable replacement you need. Its precision design and compatibility restore proper DEF function and help maintain emissions compliance—and it’s available now at Tamerx with fast shipping and trusted performance.