− Decrease quantity for Gauge, Fuel Pressure, 0-15 psi, 1 1/2 in., Analog, Mechanical, 1/8 in. NPT Male Thread, Black Face, Each Quantity + Increase quantity for Gauge, Fuel Pressure, 0-15 psi, 1 1/2 in., Analog, Mechanical, 1/8 in. NPT Male Thread, Black Face, Each Add to cart