All photos are of the actual part — including our production photo and reference shots from the OEM application. Brand and model names are for fitment reference only.
Specifications
Cross-reference
Part Specification
| Material | 65Mn manganese steel |
| Hardness | 45–50 HRC |
| Deck size | 42" |
| Center hole | 7-point star |
| Air lift | 1"(25mm) |
| Blade type | Mulching |
| Application | Lawn tractor |
| Length | 21-3/8"(543mm) |
| Width | 2-1/2"(63.5mm) |
| Thickness | 13/64"(5mm) |
| Inner box | Per OEM reference |
| Carton | Per OEM reference |
| Min. order | 300 pcs / SKU |
Replaces these part numbers
GY20850AM137327AM141033GX22151
Fitment
Which machines it fits
Type your mower model below to confirm this blade fits — before you enquire.
32 of 32 models
D130S100D105D110X300S240D100D120D125E100E110E120E130LA100LA105LA110LA115LA120LA125LA135S110S120S130X110X120X125X126X145X304X310Z225Z235
Notes for buyers
Fitting & compatibility notes
- STOP — Verify your deck size and center hole BEFORE ordering. This GY20850 blade fits 42-inch decks ONLY with a 7-point star center hole. Many compatible models (X300, S240, and others) come in BOTH 42-inch and 48-inch deck versions — this blade will NOT fit 48-inch decks.
- GY20850 high-lift blade kit fits John Deere 42-inch mower decks across multiple series. Compatible models include 100 Series (102, 105, 115, 125, 135), D Series (D100, D105, D110, D120, D125, D130), E Series (E100, E110, E120, E130), and LA Series (LA100, LA105, LA110, LA115, LA120, LA125, LA135).
- Also fits S Series (S100, S110, S120, S130, S240), X Series (X110, X120, X125, X126, X145, X300, X304, X310), and ZTrak zero-turn models (Z225, Z235). Replaces OEM part numbers AM137327, AM141033, and GX22151. Each set includes 2 blades — most 42-inch John Deere decks require 2 blades per set.
- Precise Fit: Exact OEM replacement: John Deere GX22151 GY20850
- Mower blade type:Toothed mulching blade,compatible deck size:42"
