Description Piston, hydraulic lift, includes rings, 3" dia. Tractors: TO35 (s/n 179304 & up), MF35, MF50, MF65. For early production tractors: MF135, MF150, MF165 using 3" dia. piston. This item is a suitable alternative for the following: 184443M91, 828607M91, A-184443M91, A184443M91, S.61001, S61001, 828607M2