13-Position Receptacle Housing for Crimp Terminals
You should hear the terminal click when it fully seats; the primary latch holds it against back-out under vibration. The PA66 material gives a good balance of stiffness and flex for the latch arms, so they don't go soft after repeated mating cycles.
The most important thing to know about this housing: contacts are not included. The housing accepts the standard CT-series crimp contacts, which are available in tin or gold plating depending on your mating cycle and environmental requirements. If it backs out, it's scrap, so use the correct tooling and verify full insertion.