This is the upgraded filter nipple that will allow the use of the newer versions of fuel filters on the Titanium systems.
In the Summer of 2010 FASS discontinued the production of the FF-2003 Fuel Filter. The new filter requires a change in the size of the fuel filter thread. However, the new thread size offers you a much larger selection of available cross references. If you currenty have an FF-2003 or FF-5712, those are the ONLY interchangable filters you can use with your current nipple. If you have the FWS-3003 or Donaldson P553203 then you have the new updated nipple. If you have the FF-2003 or FF5712 and would like to order the new filter nipple for more cross references ,simply order this part.