Operating a crane rig like Manitowoc or Grove with a Cummins ISL engine brings heavy demands—and emissions compliance is no exception. At the core of your aftertreatment system lies the DEF (Diesel Exhaust Fluid) head unit. This specialized module monitors fluid status, ensures accurate dosing, and communicates with your engine’s control module. When it falls short, error codes, derates, or system faults can suddenly disrupt your uptime.
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Tracks DEF fluid level, temperature, and urea concentration, sending real-time data to the ECU
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Manages precise dosing of DEF into the exhaust stream so the SCR (Selective Catalytic Reduction) system can reduce NOx effectively
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Built to match OEM tolerances for drop-in compatibility with Manitowoc / Grove Cummins ISL setups
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Helps prevent warning codes, emissions faults, or engine derates tied to sensor drift or inaccurate feedback
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Designed to endure vibration, temperature cycling, and exposure to corrosive DEF
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Field-friendly installation minimizes downtime when replacement is required
Cranes face tough operating conditions, and you can’t afford nonsense from your emissions system. Installing the correct DEF head unit restores feedback integrity, stabilizes your SCR performance, and keeps your rig compliant and ready to lift—without surprises short-changing your productivity.