Description: R1234YF Refrigerant. Without high output. Repairs leaking A/C system Restores A/C function The evaporator hose transports refrigerant from the outlet of the condenser to the inlet of the evaporator This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type