The TE Connectivity 2-1670730-1 is a 3-circuit plug housing from the Heavy Duty Sealed Connector Series, part of the MCP 1.5K family. It's a single-row, 4.00 mm pitch housing designed for wire-to-wire or wire-to-panel interconnects in environments that need a seal — think engine compartments, industrial washdown zones, or outdoor equipment enclosures where moisture and dust are the enemy. The gray PBT, glass-filled shell handles -40°C to 140°C, so it lives comfortably in the same thermal envelope as the engine bay or a hot industrial cabinet.
The slide-on fastening means the plug mates with a matching panel-mount receptacle or header; the locking is positive but tool-less, which speeds up assembly on the line.
Sealed and Panel-Mounted for Harsh Duty
The sealed feature tells you this housing is built for environments where a standard unsealed connector would corrode or short. The panel mount style lets you fix the plug to an enclosure wall, with the slide-on fastening providing a quick mate/de-mate cycle.