This is "GN1PERFORMANCE EXCLUSIVE AUTOMETER LIQUID FILLED FUEL PRESSURE GAUGE and XRP FITTING" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This is the AutoMeter fuel pressure gauge 1 1/2" in diameter that goes on the fuel rail in the engine compartment. The fitting is an exclusive Gn1Performance part from XRP. Comes with all the fittings needed to mount it today.
