OTC's Oil Seal and Wear Ring Installer for 5.0 inch diameter seals makes installation a breeze! This two-piece tool makes the difficult job of correctly installing the rear crankshaft seal and wear ring on most Navistar DT-360 and DT-466 engines thru 1996 a simple task. Bolt the adapter to the crankshaft and wrench the component home. It eliminates damage to seals or wear rings that can occur when driving them into place. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it's a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians' productivity and shop profits.