Raptors, the authorized dealer of Cummins (China), established in 2015 by Mr. Jordan Wang who worked in Cummins (China) for 8 years, Jordan had been responsible for mine market for 4 years during working in Cummins china, so we have big advantages for almost all genuine Cummins generators, engine assembly and spare parts, especially for NTA855, KTA19, KTA38, KTA50, QSK60, QSX15 etc...Introduce to Water Transfer Tube The Water Transfer Tube on the engine is a part of the cooling system, and its main function is to transmit the coolant and assist the coolant to dissipate heat from the engine.