•  The pipes in the refrigerant lines are made of aluminum alloy, the cooler hose (HI) is made of nylon, and the cooler hose (LO) is made of rubber (flexible hose).

•  A high-pressure charging valve is located on the cooler hose (HI) and a low-pressure charging valve is located on the cooler hose (LO). (ZJ, ZY)

•  A high-pressure charging valve and low-pressure charging valve are located on the cooler hose. (MZ-CD 1.4 DI Turbo)

•  Spring-lock coupling is used for pipe-to-pipe connections. As a result, pipes can be connected easily, maintenance of torque is unnecessary, and serviceability is improved.

•  There is a garter spring in the cage on the male side of spring-lock coupling type and the end of the pipe on the female side is flared. When the pipes are being connected, the flared end of the female side forces the garter spring on the female side to expand, and by fully inserting the male side into the female side, the flared end is locked by the garter spring. When the cooler pipe or cooler hose is replaced, the additional indicator ring comes out after connecting, indicating that the flared end is locked.