Marpac Fuel/Water Separating Marine Filter Kit - Racor Inside - With Composite Filter HeadMarpac Fuel Water Separating Marine Filter Kit Racor Inside With Composite Filter Head Kits include: Universal Filter Head, (2) Aluminum Hose Barbs, (2) Aluminum Plugs, Thread Sealant . 20 fl. oz., Water Collecting Bowl and 10 Micron Water Separating Fuel Filter. Why Racor Filter Inside? Traditional filter media (paper) absorbs water. Marpac with Racor Filter Inside actually sheds water away from the filter. Can be used with all 2 and 4 stroke