Fuel Pressure Gauge Adapter GM LS Series Engines, -4AN female to 1/8" NPT, Black finish

To ensure a precise fuel pressure reading for optimum performance Aeroflow LS fuel pressure adapter allows the user to adapt a fuel pressure gauge to the standard LS series fuel rail. With the female -4 and female 1/8"" NPT this fitting can also be used on other applications.

Note: The removal of the Schrader valve is necessary.