The TRP Emergency Line Air Brake Coil (Part No. 2285789) is a robust, coiled pneumatic hose designed for the critical connection between the commercial truck (tractor unit) and the trailer’s emergency (supply) air line. This hose is responsible for transmitting the constant air pressure required to keep the trailer brakes released, and for activating the emergency braking if pressure is lost.

Typically color-coded Red for identification, this coiled hose ensures compliance with industry standards for air brake connections. The coil design provides the necessary flexibility and recoil action, preventing the hose from dragging on the ground or kinking during sharp turns or when coupling/uncoupling. The high-quality material ensures durability against abrasion, oil, and extreme weather conditions.