TUBE, Coolant outlet (Rear Heater Return Line) Be advised, Mopar does offer rear coolant line repair kits...

Bulletin number

9004226

Component

Engine and engine cooling

Summary

TUBE, Coolant outlet (Rear Heater Return Line) Be advised, Mopar does offer rear coolant line repair kits for MY 2018 - 2020 vehicles for coolant leak repair. Please see TSB 23-023-20 for kit part numbers and instructions. If looking to replace the rear heater line due to a rub through from the trans oil heater (TOH) line clamp on the engine side: 1) Rotate the tangs on the clamp towards the transmission and out of the direction of the rear heater line 2) Adjust the TOH line by pushing it towards the engine to increase clearance between the TOH line and rear heater line.

Owners of these vehicles have filed 63 complaints in the engine category.