ACDelco Gold (Professional) Remanufactured Air Conditioning Compressors are a high quality alternative to Original Equipment (OE) parts. Remanufactured A/C Compressors pump refrigerant through the system. The compressors are typically engine driven via the accessory belt, and a clutch on the compressor is used to engage and disengage the compressor. Hybrid vehicles are typically equipped with an electric motor driven compressor. These compressors draw in cool refrigerant gas from evaporators and pumps it to a much higher pressure. The high pressure gas travels on to the condenser. The compressors are lubricated by refrigerant oil. Remanufacturing A/C Compressors are an industry standard practice that involves disassembly of existing units, and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.