Allison Transmission's, Model's Tt2000 And Tt3000, Rebuilt For John Deere Model 544 & 644 "a" "b" "c" & "d" Loaders, Also Fits The FORD "a" Series Loaders & Case "w" Series Loaders. We Are A Member Of A Nationwide Used Parts Locater System, Please Call Us For All Your Parts Needs.