When your heavy machinery or equipment uses a SANY chassis with a Cummins ISB 6.7L engine, keeping your emissions system functioning reliably is essential. The SANY Cummins ISB 6.7L DEF Head Unit (OEM 502392) is a crucial link in that chain: it senses, regulates, and reports the status of your DEF (Diesel Exhaust Fluid) circuit. Failures here can cause warning lights, emissions faults, or engine derates—any of which can disrupt work when you least expect it.
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Continuously monitors DEF fluid level, temperature, and urea concentration, providing real-time feedback to the ECM
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Regulates precise dosing of DEF into the exhaust stream to support the SCR (Selective Catalytic Reduction) system’s ability to reduce NOx emissions
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Built to meet OEM 502392 standards, ensuring plug-and-play compatibility with SANY / Cummins ISB systems
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Helps prevent fault codes, emissions warnings, and engine derates caused by sensor drift or incorrect readings
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Constructed to endure harsh environments—vibration, thermal cycling, and exposure to DEF’s corrosive nature
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Designed for straightforward replacement in the field to minimize downtime
Ignoring a failing DEF head module can lead to cascading issues in your emissions system. Installing the OEM 502392 SANY Cummins ISB 6.7L DEF Head Unit helps restore system integrity, ensures your SCR system works as intended, and reduces the risk of sudden faults or derates. In heavy-duty operation, this small component can make a big difference in keeping your machinery reliable and compliant.























































































































































































































































































