The Case IH YB40F00011F1 is a genuine OEM replacement ring designed for critical sealing applications within hydraulic pump assemblies. This essential component ensures proper hydraulic system function and prevents leaks in a wide range of Case IH agricultural and construction machinery, including SR and SV series skid steer loaders, TR and TV series compact track loaders, 121F, 21F, 321F compact wheel loaders, Farmall A series tractors, Farmlift telehandlers, and CX series mini excavators.