Quick view ECR Performance GM LS Ignition Coil Connectors Pigtail (4 pins) ONLY For D585 Coils Sold in sets of 4, 6 or 8 Pigtails Connector with seals. For GM LS ignition coil Connector Compatible only GM Coils with integrated aluminum heat sink : (D585)  Refernece part numbers: D585  MSRP: Was: Now: $18.98 - $29.98