A/C Compressor Block Fittings for use on ALL Late Model GEN III Chrysler Vehicle Compressors. Fittings are unique, Secured at existing stud on Factory Style Compressor and it Creates a Male Insert O Ring Fitting for the Common #8 & #10 Air Condition Fittings found in most all aftermarket A/C Kits along with readily available Aftermarket A/C Fittings. Comes with Block Fitting to Compressor O-Ring, Just Add your Fitting. Fits The following Known Factory Engine A/C Compressors: 3.7L, 4.7L, 5.7L, 6.1L, 6.4L, & Viper V-10 Compressors. Perfect Addition to adapt your Late model Compressor to most any Air Conditioning System.