48RE Transmission Cooler Hose Line Fittings for 2003-07 Dodge Ram 5.9L 2500/3500

48RE Transmission Cooler Hose Line Fittings for Dodge Ram 5.9L

These transmission cooler hose line fittings connect the cooler lines to the transmission on 48RE-equipped 2003-07 Dodge Ram 5.9L 2500 and 3500 trucks.

Overview

These transmission cooler hose line fittings are replacement connection hardware for the 48RE automatic transmission cooling circuit. The fittings secure the cooler lines to the transmission and radiator, helping maintain proper fluid flow and temperature on 2003-07 Dodge Ram 5.9L 2500 and 3500 trucks. They suit owners repairing leaks, replacing damaged lines, or completing a transmission service.

Built For Performance

• Threaded connections match 48RE transmission cooler line ports
• Sealing surfaces resist fluid weep under operating pressure
• Steel construction handles heat and vibration from the drivetrain
• Direct replacement for worn or corroded factory fittings

Fits These Machines

• for Dodge Ram 2500 with 5.9L and 48RE transmission (2003-2007)
• for Dodge Ram 3500 with 5.9L and 48RE transmission (2003-2007)

On-The-Job Use

• Replacing leaking cooler line fittings during transmission service
• Repairing damaged connections after line removal
• Rebuilding the cooler circuit on high-mileage tow trucks
• Restoring fluid flow after corroded fittings are replaced

Specs At A Glance

Good To Know

Q: Will these fittings work with aftermarket cooler lines? A: They are designed to match the 48RE cooler line thread and seal pattern, so they work with lines built to that same specification. Verify thread size against your existing fittings before ordering.

Q: Do I need new seals with these fittings? A: Fresh seals or O-rings are recommended whenever cooler line fittings are installed to prevent leaks. Check your line kit for included seals before starting the job.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.