Air Conditioning Compressor Upgrade is an all new, bolt-in aluminum 10 cylinder compressor that replaces the cast iron, 6 cylinder axial A6 style compressor originally equipped. Features an aluminum body that is 52% lighter than original material and has a more efficient design that yields less engine drag thus increasing fuel efficiency and improving engine and cooling system performance. Fits original axial compressor mounting brackets and hose assemblies and is compatible with R12 and R134A refrigerant.