The Iseki DZ121770 is a genuine OEM DEF (Diesel Exhaust Fluid) injection pump, also known as a Urea pump, specifically designed for Iseki agricultural tractors. This critical component ensures the precise delivery of DEF into the exhaust system, facilitating the Selective Catalytic Reduction (SCR) process to effectively reduce harmful nitrogen oxide emissions. It is compatible with various Iseki TG and TJA series tractor models, including TG6370, TG6400, TG6490, TG6530, TG6670, TJA8080, and TJA8100. Weighing approximately 0.907 kg, this pump is essential for maintaining emission compliance and optimal engine performance in compatible Iseki machinery.