T20790 John Deere 350 fiber steering clutch disc. These aftermarket fiber steering clutch discs for the John Deere 350 series tractors are the highest quality “reddish” discs. These “reddish” discs are far superior quality than that of the dark “greyish” colored fibers available on the market today. The JD 350 series tractors require 8 of these fibers per side. These discs fit the John Deere 350 & 350B tractors only and will NOT fit the JD 350C and later tractors. The John Deere 350C and later tractors use a wet steering clutch and a bronze disc, part #AT117553. The AT117553 bronze disc can be substituted for the T20790 in the 350 & 350B for severe service.