…..anyone know the above? Its the pressure switch near the oil filter. Eper does not say and Id rather find out without removing it to check.....but I will if I have to. Looking to fit an oil pressure gauge and need to buy a T piece that goes there to do it. My guess would be 1/8 NPT.....but anything is possible with these cars so I would like to hear from some who actually knows for sure. Thanks in advance.