Turbo and supercharger enthusiasts - this GlowShift boost/vacuum gauge is exactly what your ride needs! This 52mm (2-1/16 inch) mechanical gauge monitors everything from -30 inHg vacuum to 30 PSI boost, so you can keep tabs on your engine's performance and avoid dangerous over-boosting situations. The coolest feature? The 7-color LED lighting lets you choose from blue, red, green, teal, purple, white, or yellow to match your dashboard perfectly. There are even 2 color cycle modes if you can't pick just one! The smoked tinted lens looks awesome and the red needle is easy to read. The kit includes everything you need: 6 feet of silicone vacuum hose, T-fitting, hose clamps, wiring harness, gauge visor, and mounting hardware. The dimmer wire lets you connect it to your headlights for automatic nighttime dimming. Whether you're mounting it on your pillar, dashboard, or radio slot, this gauge adds both function and style to your modified vehicle. Keep your engine safe while looking cool doing it!