The blade set part numbers found are GX22151 and GY20850. The deck uses 1 blade.
Blade set part #GX22151 and GY20850
Blade count1 blade
John Deere 57 Mower Blade Size and Part Numbers
Mower blade set part number
GX22151 and GY20850
Number of blades
1 blade
Blade type
high-lift, mulching, standard, and bagging
John Deere 57 Blade Notes
Blade note
The John Deere 57 blade listing captured here shows blade set part numbers GX22151 and GY20850. Do not buy purely from model name if the mower deck or serial range is different
Deck note
For the John Deere 57, the captured deck information is blade count 1 blade. Deck size matters because the same model family can use different blade kits
Blade type note
For the John Deere 57, blade type is listed as high-lift, mulching, standard, and bagging. Pick the blade style for the job: clean discharge, bagging lift, or mulching
Fitment note
For the John Deere 57, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or old blade before ordering
Official information note
Mistakes do happen. Blade specs can change by year, mower deck, spindle, serial range and regional parts catalog. Please check the operator manual, old blade stamp, deck tag and official John Deere parts catalog before ordering replacement blades.
