This is a genuine BOSCH AdBlue tank, part number F 01C 600 251. It is designed to store and supply AdBlue (Diesel Exhaust Fluid) to your vehicle's Selective Catalytic Reduction (SCR) system. The SCR system is crucial for reducing harmful nitrogen oxide (NOx) emissions from diesel engines, helping your vehicle meet environmental standards. Proper functioning of the AdBlue tank is essential for maintaining optimal engine performance and compliance with emissions regulations. BOSCH is a trusted brand known for its high-quality automotive components, ensuring reliability and durability for your vehicle's exhaust aftertreatment system.