Baldwin Filters BF891 Fuel Filter

The Baldwin BF891 is a spin-on fuel filter with an integrated water separator for diesel engines, packing particulate filtration and moisture separation into a single, replaceable unit. It features a 3-11/16 inch outside diameter and a 1-14 inch thread connection, enabling direct installation into Baldwin-compatible fuel filtration housings. The media is cellulose-based filtration, designed to trap fine particulates while the built-in water separator drains away water from the fuel to protect injectors and pumps. This BF891 is commonly used as a fuel/water separator in heavy-duty diesel applications, with documented fit for International 4700 trucks from the 1990s to early 2000s, among other fleet and equipment uses. The spin-on design simplifies service—remove the spent can and replace it with a new unit, minimizing downtime and maintenance complexity. Suitable for trucks, buses, and construction or agricultural equipment that specify Baldwin BF891, this filter sits in Baldwin’s line of spin-on fuel filters and water separators and is compatible with standard Baldwin 1-14 thread housings.