AC compressor is the heart of the vehicle's air conditioning system. It compresses and circulates refrigerant (such as R134a or R1234yf) to enable cooling. Below is a detailed breakdown of its functions, types, and maintenance. Fitment: For Ford Sable 3.0L 1996-2000 For Ford Taurus 3.4L 1996-1999 For Mercury Sable 3.0L 1996-2000 Features: .