Pressure Sender 7-Bar (c) [VDO] [360 003]

Thread 1/4"-NPT (National Pipe Thread).
Earths/Grounds through sender body.
One terminal :

   700-Kpa  ||  7-Bar  ||  100-Psi
   Matching specific older gauges (e.g. Holden).
   Not suitable for modern VDO gauges.

If you require a switch I would suggest a tee-piece setup like so :
Part numbers :   [230 031]  ||  [360 003]  ||  [70510]

HEX Code : 003 (This is the abbreviated part number on the hex-nut of the sender.)