Aeromotive 15633 Liquid Filled Mechanical Pressure Gauge 0-100 PSI 1/8" NPT Pipe Thread Male Fitting

Aeromotive's liquid filled gauges offer a better looking, more durable option for gauges that will live in a harsh environment, like under the hood, attached to a high performance engine. The problem with regular liquid filled gauges is they can be sensitive to altitude, barometric pressure, or temperatur, with fuel pressure readings prone to rising and falling because of the oil in the gauge case, regardless of actual fuel pressure.

Aeromotive's liquid Filled gauges feature an equalizer valve on top that allows the gauge case to be quickly equalized to atmospheric pressure, instantly correcting the gauge reading regardless of conditions. The back of the gauge has a 1/8" pipe thread male fitting.