OEM Part Numbers: GY20852 / AM141035 / GX21784 / GX21786 145 155C LA130 LA140 LA145 LA155 LA165 Lawn Tractors,D140 D150 D160 100 Series Tractors, X165 Select Series Tractors John Deere lawn mower blades are manufactured with a combination of carbon and boron to provide hardness for a long life and sharp edge without breakage. High Lift Style Mower Blade Compatible with: 145 155C D140 D150 D155 D160 E140 E150 E160 E170 L100 LA130 LA140 LA145 LA155 LA165 S140 S160 S170 X110 X140 X165 X166 X167