No box just meter. 

This electrical, 3 3/8" gauge features a white face with black text and an optional back light for easy night time reading. Add a more custom look and get your interior lights matching with the green and red bulb covers. Operates on 4, 6, or 8 cylinder engines with points, electronic, and most 12V high performance racing ignitions. This gauge is measured in RPM and has a range of 10,000RPM.