In modern diesel engines, the DEF (Diesel Exhaust Fluid) system is an indispensable part of ensuring compliance with emissions standards. For SANY machines using the Cummins ISB 6.7L engine, the SANY Cummins ISB 6.7L DEF Head Unit, built to OEM 3600821 specifications, is a critical node. A compromised or mis-matched DEF head can undermine diagnostics, trigger error codes, or force engine derates at inopportune times.
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Monitors DEF fluid level, temperature, and urea concentration, supplying accurate data to the engine control module
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Regulates precise dosing of DEF into the exhaust stream to support the SCR (Selective Catalytic Reduction) system’s NOx reduction
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Crafted to meet OEM 3600821 tolerances, ensuring seamless compatibility with SANY Cummins ISB 6.7L systems
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Helps prevent fault codes, emissions warnings, and engine derates that arise due to sensor drift or incorrect readings
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Engineered to resist vibration, thermal stress, and corrosion from DEF chemistry
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Designed for straightforward replacement to minimize machine downtime
Don’t let a failing DEF head become the weak link in your emissions chain. Installing the OEM 3600821 SANY Cummins ISB 6.7L DEF Head Unit restores system fidelity, stabilizes feedback loops, and keeps your emissions system operating correctly even under tough conditions. Make this component a priority in your maintenance program—and keep your machine emissions-ready.























































































































































































































































































