John Deere GY20850 Replacement: Compare 27 Options
27 options24 brandsGenuine John Deere available
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27 options from 24 brands · genuine John Deere part available
Prices and availability are shown on Amazon.
GY20850 at a glance
- Fits deck size
- 42 in
Sizes as stated by several sellers on Amazon. Check them against your old part before you buy.
Our picks for the John Deere GY20850
- Genuine OEMJohn Deere mower bladeSold under John Deere's own brand: the same part your equipment shipped with.Check price on Amazon
- Closest to OEMUDC Parts mower blade, 2-packListed as a direct GY20850 replacement by an established parts brand.Check price on Amazon
- Best valueGrasscool mower bladeOne of the most-bought aftermarket options for this part.Check price on Amazon
All 27 options for the John Deere GY20850
As an Amazon Associate I earn from qualifying purchases. Prices are shown on Amazon.
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- GrasscoolGrasscool mower blade for GY20850Check price
- John DeereJohn Deere mower bladeCheck price
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- LawneagleLawneagle mower blade for GY20850Check price
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- POSEAGLEPOSEAGLE mower blade for GY20850Check price
- JSXDNWYJJSXDNWYJ mower blade for GY20850Check price
- GUSUHAWKGUSUHAWK mower blade for GY20850Check price
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John Deere GY20850 fitment
Replaces these part numbers
- GY20850
How to find your model number
Check your model number before you buy a replacement for the GY20850. On a push mower the model label is usually on the back of the deck, near where the handle mounts, or under the rear grass-catcher door.
Spring maintenance
A dull blade tears grass instead of cutting it. Sharpen or replace blades at the start of the season, and replace any blade that is bent, cracked or worn thin at the tips. Balance a blade after sharpening.
Part details
- OEM part number
- GY20850
- Brand (OEM)
- John Deere
- Part type
- Mower blade
- Equipment
- Lawn mower
- Also sold as
- —
- Compatible models listed
- —
- Options on Amazon
- 27
- Genuine OEM listing
- Yes
- Aftermarket brands
- 23
Maker's part vs aftermarket: the GY20850
John Deere's own GY20850 is available. 23 brands sell a mower blade listed as its replacement, including BDELI, BOSFLAG, Fourtry, FULAIGE.
- Maker's own part: made and sold by the equipment or engine maker (for example John Deere, MTD or Briggs & Stratton). Usually the highest price.
- Aftermarket parts: made by other companies to the same size and fit. Usually cheaper; materials and build quality vary by brand.
- Before you buy: find your equipment's model number (see How to find your model number, above), compare the size of your old part, and confirm the fit on the product page.
John Deere GY20850: frequently asked questions
What does GY20850 replace?
GY20850 is the John Deere part number for this mower blade. 27 products on Amazon are listed as its replacement.
Is there a genuine John Deere GY20850 on Amazon?
Yes. The option marked "Genuine OEM" is sold under the John Deere brand. Every other option is an aftermarket part made by a third party.
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