This is a set of additional gauges from Defi, including a boost gauge, oil temperature gauge, and water temperature gauge. It was used in a Subaru Impreza (GC8) at the time, and I have not confirmed its operation since removing it. According to the instruction manual, the power harness is missing. As a bonus, I'm also including a BLITZ boost gauge, although it's unclear if it's usable. Please check the photos for scratches, scuffs, and dirt.