This is a set of 4 EV6 (USCAR) fuel injectors quick disconnect pigtails. These connectors have 4" of wire so you can easily splice them in to you existing harness.
These style plugs are featured on many makes and models including Ford (using newer Bosch injectors), Dodge (Using plastic body Siemens Deka Injectors) along with many others.
I have sets of 4, 6 and 8 EV6 connectors with pigtails along with EV1 connectors with pigtails, Denso style connectors with pigtails and LS1 to LS2/LS3 adapters.