The John Deere GY21050BLE is a genuine OEM spindle assembly designed for a wide range of John Deere lawn and garden tractors and ZTrak mowers. This essential component ensures smooth and efficient operation of the mower deck, supporting the blades and facilitating precise cutting. It is a direct replacement for superseded part numbers GY20785 and GY20050, offering reliable performance and durability for models including 100, D100, E100, L100, LA100, X100 series, S240 Sport Tractor, Z200, Z400, Z500, Z600 series ZTrak mowers, as well as select Sabre and Scotts tractors. Weighing approximately 1.25 kg, this spindle measures about 197 mm in height, 165 mm in length, and 165 mm in width.