The NMWP 4F connector is available with the keying slots next to the latch(black), or on the opposite side from the latch(gray). These will
come with the terminal lock, terminals and wire seals, unassembled. A pigtail option is not currently available.
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:TPS(sensor side), CAS(harness side), coil pack(harness side)
DSM 1995-1996: Front O2
DSM 1997-1999:Front O2
3S:Cruise (harness side), Coil Pack(harness side), O2 sensors(harness side)