10 Micron Spin-on Fuel Filter Water Separator for Gasoline Marine Engines. Introducing the marine fuel filter/water separator for all inboard, outboard, two and four cycle gasoline engine applications. The PFF5510 has specially treated 10 micron rated media, guaranteed to outperform standard gas filters. The PFF5510 gasoline fuel/water separator replaces standard filters in all of the most popular marine gasoline engine applications. Applications include Mercury, Mercruiser, Yamaha, Suzuki, Honda, and Tohatsu powered vessels. The PFF5510 gasoline fuel/filter separator media was laboratory tested by Racor to Society of Automotive inside and out with highly corrosion resistant coatings to eliminate rust-through. Features and Benefits