The locking ramp on each side provides a positive latch that clicks into the mating receptacle housing — the engagement is audible and tactile, which matters on a harness assembly line where a half-mated connector can pass visual inspection but fail under vibration.
Contacts Not Included — The Critical Procurement Detail
This is not a finished connector; it is a shell that must be loaded with the correct crimp terminals before it can mate.
The receptacle accepts the matching female crimp terminals (e.g., 44476- or 45750-series). The locking ramps on the plug engage the corresponding windows on the receptacle body, and the pair locks without a secondary latch. For the terminal part numbers, the standard male pin for this housing is the 45750- series (18-24 AWG) or 46012- series (14-20 AWG), both crimp-terminated and inserted from the rear. The housing is keyed by the cavity shape — the terminal insertion tool and extraction tool are the same across the Mini-Fit Jr family.