GM Genuine Parts A/C Refrigerant Suction Hoses are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These hoses carry the refrigerant vapor from the outlet of the evaporator to the inlet or suction side of the compressor. The refrigerant suction hoses are chemical-resistant and have hydraulically crimped fittings. The hoses may include service ports depending on application, and are specifically designed for service equipment and the particular refrigerant used. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).