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Genuine Dana Spicer knuckle seal foryourFord Super Duty. This is the seal that is pressed on to the outer stub axle. It's a mechanical seal that allows your OE vacuum actuated hubs to work. If you have manual hubs...they keep debris from contaminating your inner bearing and shaft. These commonly need to be replaced when servicing axle joints, wheel bearings and ball joints. It fitsall F250, F350 and Excursion trucks built from 1999-2004. Same as Ford part number F81Z-3254-CB. If your axle is worn because of a "powdered" spindle bearing, check our other listing for the axle, bearing and u-joint. As always, if you have application concerns, please feel free to ask! Thanks for looking!
Part Number: SPI-50491
Applications: 99, 1999, 00, 2000, 01, 2001, 02, 2002, 03, 2003, 04, 2004, F250, F350, Excursion, Dana 50, Dana 60.