4mm (1 1/2 inch) Fuel Pressure Gauge. 1/8 mpt thread with a fuel pressure range from to 12 psi. This part is recommended for Fuel pressure regulators part numbers GFB-85 & GFB86

4mm (1 1/2 inch) Fuel Pressure Gauge. 1/8 mpt thread with a fuel pressure range from to 12 psi. This part is recommended for Fuel pressure regulators part numbers GFB-85 & GFB86