Oni Tools Damper/Crankshaft Oil Seal Installer is an alternative to 303-484 T94T-6700-AH and ZTSE4310. Tool kit replacement for Ford Powerstroke Engines 7.3L, Super Duty F250,F350, F450 and F550 or International Navistar T444E 6.9L. Our dual usage tool was designed to install both the front seal and the damper. The smooth screw force is used to prevent hammering and damage to components. Oni Tools ensures quality products and stands behind top of the line manufacturing. We guarantee our products to last and offer support along the way.