Description: Single replacement 30 micron filter element for our standard FM 100 filter used in all our conversion systems. Comes in box sealed in plastic for long shelf life. This element is used as a first primary filter when two filters are used in series. It is also a water separator. I recommend using two filters if you re-fuel on the road. Buy using 2 filters in your system you can increase filter life and extend top engine performance during more of the filter life. Please read more about this unique filter in our product listing for Stanadyne FM 100.