Service brake hose
Connects front and rear semitrailer service brake air
Emergency brake hose
Connects front and rear semitrailer emergency brake air
Connects front and rear semitrailer electrical system.
Protects service and emergency airbrake systems Keeps
foreign material out of air lines when brake hose assemblies are not connected.-
Stores electrical plug when not connected to electrical receptacle.
Used to couple two semitrailer chassis together.
Used to lock coupling rods in sleeves of semitrailer chassis.