ACDelco Gold (Professional) Air Conditioning Compressors are a high quality alternative to Original Equipment (OE) parts. These A/C Compressors pump refrigerant through the system and are a high quality replacement for many vehicles on the road today. The compressors are typically engine driven via the drive belt, and an A/C compressor clutch can be used to engage and disengage the compressors. Hybrid vehicles are typically equipped with an electric motor driven compressor. The compressors are lubricated by OEM specific refrigerant oil. 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.