The PFF5510 gasoline fuel filter/water separator replaces standard fuel filters. It fits these popular engine applications with it's 11/16"-16 center threads and features 10 micron Aquabloc II media to outperform other gasoline fuel filters in inboard or outboard, two or four cycle applications. Performance exceeds all OEM requirements, and is suitable for all low or high pressure injection systems. Provides a durable, high performance filter element that is treated inside and out with a highly corrosion resistant coating to eliminate rust-through.