Genuine OEM Audi Reduction Agent Tank Heat Shield, part number 4M0201308J. This protective component is specifically designed to insulate the reduction agent (AdBlue/DEF) tank from high temperatures generated by the exhaust system or other engine components. It is positioned adjacent to the reduction agent tank. Maintaining the correct temperature for the reduction agent is vital for the efficient operation of the selective catalytic reduction (SCR) emissions system. Choosing genuine OEM ensures the correct material composition, thermal insulation properties, and precise fitment to effectively manage heat and protect the integrity of the emissions system.