Deck Rebuild Kit Blade Spindle Idler Belt Wheel for John Deere 48 inch L120 L130 GX20305 GX20250 GX10168. Fits Models: Fits John Deere L120 Serial Number after 150001-, L130 Serial Number after A13001- and after B020001. Replaces OEM Part Numbers: Spindle GY20050, GY20785 Blade GX20250, GY20568 Flat Idler AUC17621, GY20110, GY20629, GY22082 Flat Idler Pulley GY20067, GY22172 Deck Wheel GX10168. California Prop 65 – This product can expose you to certain chemicals, which are known to the State of California to cause cancer or birth defects or other reproductive harm.