Top 10 Best 40 blade in 2026

Main highlights

• •Fits For John Deere 48 Inch Mower Blades, Replaces Number: John Deere GX21784 GY20852 AM137757 AM141035.
• •Fits For John Deere Mower Blades 48 Inch Deck, Compatible with John Deere 145 155C D140 D150 D155 D160 E140 E150 E160 E170 L120 LA130 LA140 LA145 LA155 LA165 S140 S160 S170 X140 X165 X166 X167 Z245 Z255 Z355E Lawn Tractor.
• •AVOID MISTAKES: The blade is NOT suitable for M145476 Circle(13/16") center JohnDeere models Z355 Z355E, and others; it is also NOT suitable for GY20568 Circle(5/8") center JohnDeere models L130 and others. This GX21784 blade is ONLY compatible with a 7-Point Star spindle. Please check that your center hole pattern matches before purchasing to avoid installation issues.
• •BLADE SPECIFICATION: Length: 17-1/8"(435mm), Width: 2-3/4"(70mm), Thickness: 5/32"(4mm), Center Hole Shape: 7 Point Star, For Deck Size: 48", Lift: 1-3/16"(30mm), Mower Blade Type: Mulching Blade.
• •3-IN-1 BLADE: Serves 3 purposes (mulching, bagging, and side discharging) at the same time. Featuring numerous curves that cuts and re-cuts grass to smaller pieces, and recycles them back into the soil as nutrients to promote healthy lawn growth. Additionally, its high-lift increases the bagging capacity by 50%.
• •LOWER CLOGGING RISK: Strong airflow and finely shredded grass can reduce clogging around the blade and improve mowing efficiency.
• •NOTICE: The cutting edges are painted to prevent rust and protect your hands during installation. The paint will wear off as you mow the grass.
• •ENSURE SUPERIOR PERFORMANCE: we conduct a series of rigorous tests, including the Rockwell Hardness Test, V-bend Test, Blade Chip Test, Balance Test, Performance Test, and Field Test.