APPLICATION: The outer axle bearing seal kit & tube seal kit & snap ring thrust washer kit is compatible with for Super Duty Excursion F450 F550 50 60 front with leaf spring front suspension (1998-2004). FUNCTION: The outer tube seal kit & thrust washer snap ring kit used to outer axle shaft seal to prevent dirt from entering and replace the old and wear seals. Rebuild the front axle for Super Duty F450 F550 with 60 50 front axle. PACKAGE INCLUDE: The front axle bearing seal kits includes 2 pcs 50381 outer tube dust seals, 2 pcs 50491 outer axle seals, 2 pcs 2019816 inner tube seals, 2 pcs 41784-2 o ring, 2 pcs small needle bearing, 2 pcs 47766 front axle thrust washers, 2 sets 701166X front axle thrust washer kit, 2 pcs 620142 axle snap rings. MATERIAL: The front axle knuckle seal kit is made of steel and rubber, treated with high temperature resistance and anti-, sturdy and . The axle seals kit is for F450 F550 with 50 60 axle. Colour:Random Color(Color is random, no specification is accepted) Material:Steel + Rubber Package Contents: 1 * Thrust Washer Seals Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.