Photo 1 of Front Axle Vaccum Knuckle & Tube Seal Kit for 1998-2004 Ford F250 F350 F450 F550 Super Duty Excursion Replace 50491 50381 41784-2 Dana 50 60 Front Axle Knuckle Tube, Front Oil Seal Set

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Photo 1 of Front Axle Vaccum Knuckle & Tube Seal Kit for 1998-2004 Ford F250 F350 F450 F550 Super Duty Excursion Replace 50491 50381 41784-2 Dana 50 60 Front Axle Knuckle Tube, Front Oil Seal SetPhoto 2 of Front Axle Vaccum Knuckle & Tube Seal Kit for 1998-2004 Ford F250 F350 F450 F550 Super Duty Excursion Replace 50491 50381 41784-2 Dana 50 60 Front Axle Knuckle Tube, Front Oil Seal Set