Air conditioning pump/compressor customized for Aston Martin DB9/DBS 05-12, equipped with variable displacement technology. Built-in intelligent clutch and pressure relief valve, automatically match the temperature requirements in the car, and eliminate slipping and abnormal noise. Support fast and lossless replacement, instantly restore the powerful cooling of the air conditioning system, so that the British luxury cabin always maintains a constant temperature and comfort, adapts to maintenance upgrades and performance restoration needs, and escorts the driving experience of classic supercars!