AutoMeter Oil Pressure Gauge 1-1/2 gauges are a perfect fit for the tight spaces. Classy gauges shows your flow with quality precision. Silver face 100 psi gauge work well and adds a touch of contrast against stock gauges for attention getting visibility. Features Perfect for installing in tight spaces Great for monitoring air, fuel, or oil pressure Utilizes 1/8 NPT male fitting on back of gauge for installation Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications Liquid filled design for superior resistance to shock, vibration, and the elements