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48" Deck Rebuild Kit John Deere D140 D150 LA145 X140 S170 Z255 GX21833
$125.00
Product Code: 80-DK-039
Complete 48" deck rebuild kit for select John Deere L Series, 100 Series, D Series, LA Series, X Series, E Series, S Series and EZtrak/ZTrak mowers. This kit combines the major wear components of the compatible 48" three-blade deck, including 3 spindle assemblies, 3 spindle pulleys, 3 mower blades, 1 deck drive belt and 3 deck idler pulleys.
Designed around the John Deere GY21098 spindle, GX21784 / GY20852 blade, GX21833 belt, GY20067 small idler and GY20110 / GY20629 large idler component families used across multiple generations of John Deere 48" mower decks.
Important Fitment Check: John Deere used different 48" deck configurations within some model families and production ranges. Confirm your mower has the compatible 48" three-blade deck and compare the OEM part numbers below before ordering. Serial number is especially important for L120 and L130 models.
What's Included
| Component | Qty. | OEM Reference Family |
|---|---|---|
| Spindle Assembly | 3 | GY20454 / GY20962 / GY21098 / AUC15811 |
| Spindle Pulley | 3 | GX20367 / UC23728 |
| 17" Mower Blade | 3 | GX21784 / GY20852 / AM141035 |
| Deck Drive Belt | 1 | GX21833 |
| Small Flat Idler Pulley | 2 | GY20067 / GY22172 |
| Large Idler Pulley | 1 | GY20110 / GY20629 / AUC17621 |
OEM Part Number Cross-Reference
Spindle Assemblies:
AUC15811, GX21694, GY20454, GY20867, GY20893, GY20962, GY21098
Spindle Pulleys:
GX20367, UC23728
Mower Blades:
AM137757, AM141035, GX21784, GY20852
Deck Drive Belt:
GX20571, GX21833
Small Idler Pulleys:
GY20067, GY22172
Large Idler Pulley:
AUC17621, GY20110, GY20629, GY22082
Component Specifications
Blades
Approx. 17" long × 2-3/4" wide × .160" thick with 7-point star center. Three blades are used on the compatible 48" deck.
Spindle Assemblies
4-bolt style replacement spindle assemblies designed for the John Deere 7-point star blade mounting system. Greasable replacement design.
Deck Drive Belt
Replaces GX21833. John Deere specifies approximately 3599.4 mm (141.7") effective length and approximately 14.2 mm width for GX21833.
Small Idler Pulleys
This kit includes 2 small idler pulleys in the GY20067 / GY22172 family.
Large Idler Pulley
This kit includes 1 large idler pulley in the GY20110 / GY20629 / AUC17621 family.
John Deere L Series Applications
- L120 — Serial Number above 150000
- L130 — Serial Number above 150000
L120 / L130 Owners: Earlier L120 and L130 48" deck configurations can use different spindle and blade families. For this kit, verify the GY20454 / GY20962 / GY21098 spindle family, GX21784 / GY20852 blade family, GX21833 belt and 2-small / 1-large idler configuration before ordering.
John Deere 100 Series Applications
- 145
- 155C
John Deere D Series
- D140
- D150
- D155
- D160
John Deere LA Series
- LA130
- LA140
- LA145
- LA155
- LA165
John Deere X Series
- X140
- X165
- X166
- X167
John Deere E Series
- E140
- E150
- E160
- E170
John Deere S Series
- S140
- S160
- S170
John Deere EZtrak / ZTrak Applications
- Z255 EZtrak with applicable 48" deck
The John Deere Z255 was produced with specific 48" deck configurations. Confirm GX21833 belt, GX21784 / GY20852 / AM141035 blade compatibility and the remaining spindle and idler components against your mower before ordering.
One John Deere 48" Platform — Multiple Generations
This component architecture spans multiple generations of John Deere 48" lawn tractors, including later L120/L130 configurations and models from the 100, D, LA, X, E and S Series. Matching the OEM deck component numbers and serial configuration is more reliable than relying on model family or deck size alone.
This component architecture spans multiple generations of John Deere 48" lawn tractors, including later L120/L130 configurations and models from the 100, D, LA, X, E and S Series. Matching the OEM deck component numbers and serial configuration is more reliable than relying on model family or deck size alone.
How to Confirm This Is the Correct Kit
- Confirm your mower is equipped with a 48" three-blade deck.
- Verify that the blades use the 7-point star center.
- Compare your spindle with GY20454 / GY20962 / GY21098 / AUC15811.
- Compare your blades with GX21784 / GY20852 / AM141035.
- Confirm mower deck belt GX21833.
- Confirm 2 small idlers in the GY20067 / GY22172 family.
- Confirm 1 large idler in the GY20110 / GY20629 / AUC17621 family.
- For L120/L130 and other models with production changes, verify the mower serial number and original deck components.
Serial number breaks can affect deck configuration on some John Deere models. If you are unsure, contact Green Dade Outdoor with the complete mower model and serial number before ordering.
Aftermarket replacement parts. John Deere names and OEM part numbers are used for identification and compatibility reference only.
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