DTK-471/JS50029 Dongfeng Cummins euro V emission postprocessing system sensor electromagnetic valve temperature sensor 3690610-000 DTK-471/JS50029 Dongfeng Cummins euro V emission postprocessing system sensor electromagnetic valve temperature sensor 3690610-000 DTK-471/JS50029 Dongfeng Cummins euro V emission postprocessing system sensor electromagnetic valve temperature sensor 3690610-000 DTK-471/JS50029 Dongfeng Cummins euro V emission postprocessing system sensor electromagnetic valve temperature sensor 3690610-000