Shiyan Cumsun Industry&Trade Co., Ltd. is engaged in CUMMINS aftermarket service. We have more than 5 years experience in exporting Cummins genuine parts and diesel parts. Our service engine model as following: 4B3.9, 6B5.9, 6C8.3, 6L8.9, 4ISBe3.9, 4ISDe4.5, 6ISBe6.7, 6ISDe6.7, ISLe8.9, ISF2.8, ISF3.8, QSB3.3,QSB4.5,QSB5.9,QSB6.7, QSL8.9,QSZ13, QSM11,ISM11, QSX15,NTA855,KTTA19, KTTA38, KTTA50,Etc. Those cummins diesel engines offer durable power for commercial vehicle, industry machine, construction equipment and marine ship. Also, if you can?t define the problem, our engineers will give you professional advice based on your current situation of diesel engine.