This is a A-906743M92 Countershaft, Transmission PN: 906743M92Main Description As Following : A-906743M92 Countershaft, Transmission P.N: 906743M92 Length: 12.250"Spline Count: 17 / 20Teeth: 15 Stocked As: A-906472M2 Found in Section & Models : Transmission & Rear Axle > Trans: Forks, Gears, Shafts, Massey Ferguson TRACTOR: FE35, Massey Ferguson TRACTOR: 1085, Massey Ferguson TRACTOR: 135 (6 / 8 SP TRANS SN