This is a vastly improved and updated replacement for the venerable Frigidaire/Harrison A6 air conditioning compressor. Made from alloy instead of cast iron, it is 54 percent lighter than an original and features fully Teflon-coated pistons for greater performance and less power drain. The lip-type shaft seal is decades ahead of the carbon mechanical seal of old and is thus compatible with R134a refrigerant. The improved clutch incorporates a friction ring for more positive clutch engagement and is fully covered to prevent contaminates from reaching the clutch bearing. A bolt-in replacement and includes new metric hardware. These are brand-new units with no core charge. Being an updated part, this compressor differs slightly in appearance from original. We highly recommend that you replace all hoses along with the compressor. Supplied in bare alloy but can be painted black to better match an original.