Quick answer:
The John Deere S140 mower blade part number found is GY20852. The blade set part number found is GY20852. The blade measurement captured is thickness 0.204 in (5 mm) and center hole 1 in (25 mm).
Blade part #GY20852
Blade set part #GY20852
Blade sizethickness 0.204 in (5 mm) and center hole 1 in (25 mm)
John Deere S140 Mower Blade Size and Part Numbers
| Mower blade part number | GY20852 |
|---|---|
| Mower blade set part number | GY20852 |
| Blade thickness | 0.204 in (5 mm) |
| Blade center hole size | 1 in (25 mm) |
Blade Size Comparison Chart
Blade thickness comparison
John Deere S140 Blade Notes
| Blade note | The John Deere S140 blade listing captured here shows single blade part number GY20852, blade set part number GY20852, and thickness 0.204 in (5 mm) and center hole 1 in (25 mm). Use this as a buying guide, then match the blade position, deck size and center-hole style before spending money |
|---|---|
| Fitment note | For the John Deere S140, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or old blade before ordering |
John Deere S140 Mower Blade FAQ
Can you modify a John Deere S140 blade center hole to fit?
Do not do that. The captured center-hole detail is 1 in (25 mm). Grinding or drilling a mower blade can ruin balance and create vibration
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.


