SITRAK C5H C7H Urea Injector Nozzle 202V27120-0008/1 SCR System Parts

SINOTRUK SITRAK Truck SCR Aftertreatment System Parts C5H C7H Urea Injector Nozzle 202V27120-0008/1 

The SITRAK 202V27120-0008/1 Urea Injector Nozzle is a precision dosing component of the Selective Catalytic Reduction (SCR) aftertreatment system, designed to inject Diesel Exhaust Fluid (DEF), also known as AdBlue, into the exhaust stream of compatible heavy-duty diesel trucks. During SCR operation, the urea injector receives DEF from the urea supply system and introduces a controlled quantity of fluid into the exhaust, where the injected solution participates in the chemical process used to reduce nitrogen oxides in the exhaust gas. Because the dosing quantity and spray characteristics directly influence SCR operation, the injector needs to maintain consistent fluid delivery across different engine loads, exhaust temperatures, and operating conditions. Deposits around the injector tip, crystallized DEF, restricted flow, damaged sealing components, electrical connection problems, or incorrect installation can affect the dosing process and may contribute to SCR-related warning messages or abnormal emissions-system operation. The 202V27120-0008/1 nozzle is listed as part of the SITRAK SCR system, with part references associating it with C5H, C7H, and C9H configurations and identifying the Wuxi version of the component.