AT117553 John Deere 350 bronze steering clutch disc. These steering clutch discs fit the John Deere 350, 350B, 350C, 350D & 400G tractors. The John Deere 350 series tractors require 7 of these AT117553 bronze discs per side. The John Deere 350 series tractors also require a mating steel steering clutch disc, part #T21315T. The AT117553 bronze disc can also be substituted for the T20790 in the 350 & 350B for severe service.