The B7299 High Efficiency Spin-On Lube Filter ensures you are Ready , being designed with only one inlet and one outlet. This heavy duty design allows the oil that flows through both the full-flow and bypass sections to go directly to the engine, rather than some of it returning to the sump. This translates into better protection for engine components from the destructive effects of contaminants, such as: water, fungus and bacteria, precipitates, particulates, and wax. Replacing lube filters ensures clean oil continues to pass through the oil filter. The Baldwin High Efficiency Spin-On Lube Filter replacement keeps your engine running at maximum capacity.