The John Deere GX20470 is a genuine OEM tension spring designed for use in various John Deere lawn and garden equipment. This critical component ensures proper tensioning for optimal performance and durability. It is a direct replacement part for a wide range of X300, X500, and Z-Series models, including X300, X304, X310, X320, X324, X340, X360, X500, X520, X530, X534, X540, Z425, Z445, Z465, Z525E, Z535M, Z540M, Z645, Z655, Z665.