TEMP GAUGE-WHITE This is a genuine Mercury Marine factory OEM part, not aftermarket.Fits in 2-1/8" (52mm) hole.Round, white gauge face fits in 2-1/8 in. (52mm) holeFogging resistant glass lens for durability and long service lifeWorks with all SmartCraft compatible enginesBezels are sold separately from each instrument allowing for the boater to select the color of their choice to complement or contrast with the face of the instrument