Fuel Line Gauge Adaptor Place our Fuel Pressure Gauge anywhere along the fuel line, fits all gauges with 1/8npt thread. With this unique Gauge adaptor you can place any fuel pressure gauge with 1/8npt thread anywhere along the fuel line. Easy access to check your fuel pressure has never been easier. 3/4 UNF Ports, available Fittings to adapt these filters to AN-10, -08 or -06 line.  Technical information :1/8NPT thread, fits directly with Nuke Performance fuel pressure gauge.Billet aluminum 6082-T6.Internal diameter of 17,5mm which does not affect the fuel flow.Delivered with 2x 3/4 AN-8.3/4 UNF Ports, available to AN-6, AN-8 or AN-10 line.Laserengraved. Measurements : Width : 50 mm Height : 30 mm Depth : 35 mm Thread : 1/8" NPT Weight : 80 g * All measurements excluding the supplied fittings. * The guage & fittings are not included - found below.