In severe duty performance and racing applications, monitoring your cooling system pressure can be just as critical as the temperature, providing a more detailed picture of what's happening under the hood and advanced notice of imminent failures. This high precision, digital stepper motor Water Pressure gauge from AutoMeter offers premium grade components and performance such as stainless steel solid state sensors and a pre-terminated wiring harness for ease of installation and disassembly when components need to be removed from the vehicle for service between events. 7 color user-selectable background illuminations (red, blue, green, white, yellow, orange, and violet) with adjustable brightness for day and night - with independent dimming of dial and pointer. SPEK-PRO