The axle shaft seal special tool allows you to install and insert the axle shaft seal of the vehicle in its proper depth and position by pressing it on to the wheel knuckle assembly. This is applicable for your 1999 F-250, 2000 F-350, 2001 F-450, 2002 F-550 and 2003 Excursion 4x4 vehicle. If you need to replace any parts on the steering and suspension components like u-joints, including ball joints then you're going to need to replace also the vacuum seal to avoid leakage using this vacuum seal tool for proper installation. The Axle Shaft Seal Tool is made of fine steel and designed with handle and correct ridges to fit ford vehicles. Compatible with the following vehicles: 2000-200 Excursion 4x4 1998-2004 F-250 Super Duty 1998-2004 F-350 Super Duty 1998-2004 F-450 Super Duty 1998-2004 F-550 Super Duty Replaces part numbers: 6695 This is a compatible replacement part manufactured by AA Ignition. This axle shaft seal installer is NOT a genuine OEM part. Vehicle makes and their associated vehicle models and part numbers are used in this listing only to identify the vehicles this axle shaft seal tool fits.