Two O-ring seals are included with the filter, which are to be used on the moisture sensor in the center of the filter element.
These are for 2004 to 2009 model years only - Not for 2002-2003 or any Sprinter engines 2010 and later.
If you are planning on removing and replacing the original "Clic" style fuel hose clamps on top of the filter, you will need 1 x 13 mm clamp and 1 x 15mm clamp, see below.
