The Auto Meter 2-1/16" Extreme Environment Water Pressure Gauge 0-35 PSI is engineered to endure tough conditions, providing real-time, accurate cooling system pressure monitoring. Whether you're racing on a track, hauling heavy loads, or driving off-road, this gauge ensures you're always informed. Its IP69K certified waterproof sealing and AutoMeter's Digital Stepper Motor technology ensure durability and precise readings. A built-in warning system alerts you when pressure drops below 4 PSI, with LED backlighting changing from white to red. Easy installation is facilitated by a direct plug-in 6-pin DT connector and an external brightness adjustment switch. This lightweight, NASCAR-inspired gauge is designed for high-performance vehicles. Trust the Extreme Environment series to keep you in control across various demanding applications.