Air conditioning (AC) compressors. They are key components of a vehicle's AC system, responsible for compressing and circulating refrigerant to cool the cabin air.
Key features:
Function: Compresses gaseous refrigerant into a high-pressure, high-temperature liquid.
Mechanism: Typically belt-driven by the car's engine.
Condition: The items in the image appear to be used parts, showing signs of wear, dirt, and rust.
Compatibility: Specific models are designed for different vehicle makes and engines, such as Chevrolet Spark or Mazda CX-5