In today’s strict regulatory environment, your DEF (Diesel Exhaust Fluid) system is at the core of keeping a diesel vehicle compliant. The REV Group Cummins ISL DEF Head Unit (OEM 719006) is a mission-critical component that ensures your aftertreatment system can measure, adjust, and respond to changing conditions. Failures here often result in emissions warnings, error codes, or even derates—so choosing the right DEF head is more than just repair work; it’s preventative maintenance.
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Continuously monitors DEF fluid level, temperature, and urea concentration and feeds data to the engine control system
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Controls precision dosing of DEF into the exhaust stream to support the SCR (Selective Catalytic Reduction) process
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Manufactured to match OEM 719006 tolerances for plug-and-play compatibility with REV Group Cummins ISL installations
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Reduces risk of warning codes, system faults, and engine derates caused by inaccurate or errant sensor feedback
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Built to resist vibration, thermal cycling, and exposure to DEF’s corrosive chemistry
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Designed for relatively easy installation to minimize vehicle downtime
Waiting until a warning light appears can be costly. Installing the OEM 719006 REV Group Cummins ISL DEF Head Unit ensures your emissions system stays accurate, reliable, and compliant—protecting your engine, your operations, and your peace of mind.




























































































































































































































































































