B3020R Clutch Driver Fits John Deere 50One New Aftermarket Replacement Clutch Driver (Clutch Drive Disc) Fits John Deere 50 Tractor This aftermarket replacement clutch driver (also listed as a clutch drive disc) is a direct replacement for the dry disc clutch system on the Fits John Deere Model 50 tractor. The Fits John Deere 50 uses a mechanical dry disc clutch, and this driver is a critical component in that assembly, transferring engine power to the transmission. Compatible Models Fits