EVIL ENERGY 5/16 Barb Fuel Pressure Gauge Fitting Adapter with 1/8 NPT Sensor Gage Port Aluminum Black. [Size] The thread size of NPT is 1/8-27. OD of brab: 8mm, suitable for 5/16" ID rubber hose. [Application] Can be used on a fuel water separator or transmission oil cooling to add a fuel pressure gauge or temperature sensor between fuel lines.
