DEF/AdBlue Heating Unit – Direct-Fit for 2010+ Sprinter & Mercedes Diesel Vans

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Maintain reliable urea/DEF delivery and emissions compliance with this genuine DEF/AdBlue heating unit, designed for 2010-on Sprinter 2500/3500 and compatible Mercedes-Diesel vans. This essential heater prevents AdBlue from freezing or crystallizing in cold temperatures — safeguarding your Diesel Exhaust Fluid system to ensure correct DEF flow into the SCR system for NOₓ reduction. A failing or degraded heater can trigger DEF-system fault codes, “Check AdBlue” warnings, or even prevent your vehicle from starting under certain conditions.    Replacing it with this direct-fit unit restores proper DEF fluid heating, protects your emissions system, and helps avoid emissions-related shutdowns or limp-mode. Manufactured to OEM standards and built for durability under under-vehicle conditions (heat, road grime, vibration), this DEF heating unit installs directly with no modifications — ideal for both DIYers and professional mechanics. Whether you’re fixing a DEF-system fault or proactively maintaining your BlueTec system, this unit is a must-have for long-term reliability, clean emissions, and trouble-free diesel operation.

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