LS GM R4 AC Compressor Adapter fitting CNC Machined. LS GM R4 AC Compressor Fitting Adapter Was Designed With The Right Clearance To Fit Without Any Modification to Your Compressor. This Adapter Block Fitting Has The Correct Fitting For A GM R4 A/C Compressor And Goes Straight To 2 Male A/C Line Fittings (#8 3/4-16 And #10 7/8-14).
