MTA-156 IDC Receptacle, 9 Positions, 0.156" Pitch
The closed-end feature stops the cable from pushing through the back of the housing during IDC termination, which saves a rework step on the harness bench.
For a complete spare kit, stock both halves or neither; an orphan receptacle on the shelf is dead stock until its header arrives. Wire gauge is fixed at 22 AWG for the IDC termination — the slot width in the insulation displacement contact is sized for that diameter. The connector does not accept 18 AWG wire; the IDC slot will not cut through the thicker insulation reliably.