Seal out performance - slowing dirt with Timken transmission input shaft seals. They are available for a variety of materials for a range of applications. Designed as OE replacements, these top - quality seals meet or exceed OE standards. Timken transmission input shaft seals will fit and function as well as or better than the originals. A good seal is vital for the proper and consistent operation of your transmission - - count on the pros at Timken to protect your bearings with dependable, leak - free performance.