Mopar Transmission Cooler Line Pressure And Return Hose And Tube for Ram (2019-24) 2500/3500 6.7L Cummins 68RFE

This genuine Mopar pressure and return hose and tube assembly is part of the transmission oil cooler circuit on 2019–2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins and 68RFE automatic transmission. It provides the main pair of lines that carry hot transmission fluid to the cooler and return cooled fluid back to the transmission.

The assembly combines pre-bent steel hard lines with molded rubber hose sections and factory-style crimps, making it a direct bolt-on replacement for the original cooler lines. Using the correct OE routing helps maintain proper clearance from the frame, steering, suspension, and exhaust components, which is critical for daily driven work trucks and heavy towing rigs that see constant vibration and chassis flex.

This 68397154AD unit is the latest revision and replaces earlier numbers 68397154AA, 68397154AB, and 68397154AC. Installing the updated assembly helps resolve issues with rusted hard lines, cracked hose sections, or damaged fittings that can lead to leaks, aeration, or reduced flow to the transmission cooler, all of which can contribute to higher operating temperatures and shortened 68RFE life.

Because it is a complete OE-style TOC assembly, this Mopar line set interfaces correctly with the transmission case, jumper tube, cooler, and any integrated bypass or bracket hardware on 2019+ Ram HD trucks. It avoids the guesswork and potential restrictions that can come from patching cooler lines with universal hose or compression fittings.

For owners and shops servicing 2019–2024 Ram 2500/3500 6.7L Cummins trucks, replacing compromised cooler lines with this genuine Mopar 68397154AD assembly is a straightforward way to restore factory fluid routing, support stable transmission temperatures, and protect the 68RFE in demanding work and towing conditions.