It could be. I do not know how the setup is on a Tundra.
My E-450 chassis has the rubber line from the frame to the rear axle about half way between the differential and the left wheel. This connects to a "T" and steel lines go in both directions. A short run to the left side which has a rubber hose on the par that connects to the caliper. There is a long run to the right rear wheel which bends up and over the differential and is held away from the metal by brackets. At the right side it also terminates in a rubber hose which connects to the caliper.
The part that failed/ruptured was the long run from the "T" to the right side. The rubber hose was molded in to the metal line so I had to purchase steel line, bend it over the differential and then purchase rubber hose to attach to the caliper on the end of the steel line.
