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The BALDWIN FILTERS BF7997 is a spin-on automotive fuel filter designed to remove contaminants from diesel or gasoline fuel systems before they reach the injection components. With an M18x1.5 thread size, it installs on standard threaded filter mounts found across a wide range of commercial and fleet vehicles. Weighing 2.07 pounds, it is a direct-replacement unit intended for professional service intervals. Diesel technicians and fleet maintenance crews are the primary installers, replacing this filter as part of scheduled fuel system service to protect injectors and fuel pumps from particulate damage.
The BF7997 is suited for automotive and light-to-medium duty fleet applications where a threaded spin-on fuel filter is specified. It cross-references to Donaldson P502536, Fleetguard FF5702, and Hastings FF1255, making it a recognized drop-in option for shops that source filters across multiple supplier lines. It is typically installed during scheduled preventive maintenance on vehicles where fuel cleanliness is critical to injection system longevity.
Cross-references Donaldson P502536, Fleetguard FF5702, and Hastings FF1255. Designed as a drop-in replacement spin-on fuel filter for automotive and fleet applications using an M18x1.5 threaded filter mount.
Installation is typically performed by diesel technicians or fleet service mechanics as part of a scheduled fuel system maintenance interval. Before removal, relieve any fuel system pressure according to the vehicle service manual and use appropriate fuel-rated drain equipment to capture residual fuel. Hand-tighten the filter until the gasket seats, then tighten according to the filter head manufacturer's specification. Dispose of used filters and captured fuel in compliance with local environmental regulations.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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