If this gauge is being used as a replacement for the DECO hydraulic spring rater, it is strongly suggested that customers return the gauge/head unit of the spring rater to allow us to install the new gauge for them. It is very difficult to install the new gauge and have the rater operate accurately. As we build this unit in house, our shop has the ability to install the gauge correctly and ensure that the rater operates accurately.
Please call 800.979.0122 and ask to speak with a Race tech for further assistance.