DELPHI Warranty Information 12 months; Ignition Coils- 3 year/36,000 mile (applies to Ignition Coils purchased after January 1, 2013) IMPORTANT A/C COMPRESSOR WARRANTY NOTE: In order to ensure that proper warranty credit is issued if needed, the compressor installation instructions must be adhered to. All compressor defects must show proof of purchase of an Orifice Tube/Expansion Valve, Drier, and Approved A/C System Flush or a Work Order showing the purchase of these items and that the system was flushed using approved procedures. Warranty Details