B3127R Clutch Slider Disc Fits John Deere 50 520 530One New Aftermarket Replacement Clutch Slider Disc Fits John Deere Tractors This aftermarket replacement clutch slider disc is a key component of the belt pulley clutch assembly on classic Fits John Deere two cylinder tractors. The slider disc works within the clutch system to engage and disengage power to the belt pulley, and is typically replaced during clutch overhaul or rebuild. This disc is commonly serviced as part of a full clutch rebuild on