Oil pressure sending unit used in Indmar and most other tournament boat manufactures.
Standard 0-80 PSI 240-33 Ohm
Not for Indmar 2006+ with 3 Wire Plug Digital Sensor
1/8" Pipe Thread (don't use teflon sealant, it will give the sending unit a bad ground)
10/32 Stud with common ground (one wire sending unit)