This is an universal COOLANT / OIL / FUEL temp sensor (closed element) that can be used with any engine, import or domestic. 
- GM Temperature sensor 3/8NPT
- Steel 3/8 NPT weld Bung w/step (easier for welding)
- Connector, seals, terminals with extra pin.
The threads are 3/8 NPT( check other listing for metric thread sensor Metric M12x1.5 here )
Order of installation : Green outer seal first, Plug, pass through wire, crimp pin and pull wire. These are Pull through!
GM-style sensors for use as  stock replacement for many GM CARS! or 
with stand alone line of ECUs like:
SDS
Haltech 
Megasquirt
FuelTech 
Holley EFI 
FAST 
Microtech .