Sealed 18-Position Plug Housing for Harsh Environments
The TE Connectivity 1-1564412-1 is an 18-position plug housing from the Heavy Duty Sealed Connector Series, MCP 1.5K. The slide-on fastening gives a positive tactile mate, though in high-vibration applications you may want to evaluate whether a secondary retention clip is called for.
What the 4.00mm Pitch and Sealed Housing Mean for Your Build
The 4.00mm pitch is wide enough to route 18 circuits through a single housing without crowding the crimp terminals or the panel cutout — it is not a high-density pitch, so plan your harness breakout accordingly. The wide temperature range confirms this is not a consumer-grade part; it is built for the same thermal cycling you see in an engine bay or a hot industrial cabinet. The glass-filled PBT insulation material holds its shape at the upper end of the range without creeping.