The Baldwin BF5815 is your Detroit Diesel's last line of defense against fuel contaminants. Secondary Spin-On Fuel Filter ---Intergral Post Seal ---Heavy-Duty housing provides unmatched strength ---Deformation resistant steel coil spring maintains positive load pressure on the elements ---Heavy-Duty Baseplate prevents high pressure and vibrations from causing leaks ---Contains synthetic cellulose media designed to increase efficiency, durability and contaminant-holding capacity Application Summary: Trucks, Buses and Equipment with Detroit Diesel Engines.