Squirrelly Oil Pressure Sending Unit Adapter 1/8" BSPT Port Male Female T The Squirrelly Oil Pressure Sending Unit Adapter allows you to tap into your factory oil pressure sending unit port, while adding an aftermarket oil pressure sending unit. This adapter has a male and female 1/8th" BSPT to "T" into your factory sending unit, and another standard 1/8" NPT female port on the top to allow you to run any aftermarket oil pressure gauge /sending unit! This adapter is designed for use on the Mitsubishi Evo 8/9, but will work on many other makes and models with the 1/8th" BSPT port.