AEM Electronics water/methanol flow gauges allow you to accurately monitor the status of your injection system in real time! These AEM Electronics analog face gauges offer a swept area of 320 degrees for the most resolution possible, easy-to-read quick and smooth needle movement, and a precision flow sensor and fittings to fit most any water/methanol injection kit. Plus, you can customize your gauges to your interior with a choice of seven easy selectable backlight colors, a silver or black bezel, and a white or black faceplate--all included! Exactly how much fluid you are actually injecting into your engine? AEM Electronics water/methanol flow gauges let you boost with confidence, knowing your flow through your entire rpm and boost range.