Female 4 pin plug, push to seat. These are high quality reproduction connectors to suit OEM LS1 LS6 D580 ignition coils.
Also cross references with Part Numbers HT-020103, CPS-044 & GM Delphi 12162144
Suits D580 LS1 LS6 IGC-037M, Delco BS-C1144 GM 12556450, GM 12558948, Haltech HT-020102, ignition coils