The NMWP 4F connector is available with the keying slots next to the latch(black), or on the opposite side from the latch(gray).
This is the gray connector.These will come with the terminal lock, terminals and wire seals, unassembled. A pigtail option is not
The mating connector is also available here
The standard seal included is the blue seal which will work for most 18 or 20 gauge wire.
To find the proper seals for your application, check here
DSM 1990: radiator fan
DSM 1995-1996: radiator fan
DSM 1997-1999: radiator fan