Drivers side? Probably a trans fluid cooler line.
Going into the radiator? top or bottom?I have a 2000 dts and its leaking trans fluid, the line is between the radiator and the enginee, its about the width of a quater or maybe a little larger than a nickle, it looks like its a three piece line with sometype of connectors on it . it is metal not rubber. and its and s shaped line.....i dont see where it connects to the radiator though. can someone please tell what line this is and about how much would this cost to replace,,, thanks in advance.