If your Ram 2500 or 3500 (2003-2010) has a rusty or leaking brake line in the rear, this Dorman replacement is exactly what you need.
It's a pre-bent steel line that matches the factory routing, so you don't have to fight with bending your own.

It goes in the rear, center section of the truck.
The part number is H620590, and it crosses to OEM numbers 52121118AA, AB, AC, AD, and others.

It's a direct replacement—just remove the old one, install this, flare the ends if needed (though these usually come with fittings).
Dorman is a trusted brand for automotive replacement parts.

It's brand new, never installed.

Note the California Prop 65 warning, but that's on everything these days.

If your brake line is rusted through or damaged, don't mess around—brakes are kind of important.

This line will get your hydraulic pressure back to the rear brakes where it belongs.
Good for DIYers or shops.

Solid replacement part from Dorman.