New ignition coil wiring connector.  These style coils use 2 different connectors that interlock with each other, this is the black connector.  OEM style connectors and color coded wiring, TXL grade wire like factory.  This connector may fit many different applications, it is color coded specifically for:

87-92 V8 TPI Camaro and Firebird
88-92 V8 TBI Camaro and Firebird
93-95 V8 LT1 Camaro and Firebird
92-95 V8 LT1 Corvette
87-88 V6 Fiero