One Aftermarket Replacement Transmission Input ShaftFits Massey Ferguson: 253, 290, 360, 362, 375, 390, 390T, 451, 461, 471, 481, 543, 4225, 4235, 4243, 4245, 4263, 4270Tech Info:Teeth: 16,Splines: 25,Length: 8.560"Replaces Part Number: 1677740M1