The John Deere 125 deck belt part number found is GY20072. The deck belt size found is 95 in (2,413 mm) long by 0.5 in (13 mm) wide. The drive belt part number found is GX20006. The drive belt size found is 95 in (2,413 mm) long by 0.5 in (13 mm) wide.
John Deere 125 Belt Size and Part Numbers
| Mower deck belt part number | GY20072 |
|---|---|
| Mower deck belt length | 95 in (2,413 mm) |
| Mower deck belt width | 0.5 in (13 mm) |
| Drive belt part number | GX20006 |
| Drive belt length | 95 in (2,413 mm) |
| Drive belt width | 0.5 in (13 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
John Deere 125 Belt Notes
| Mower deck belt note | The John Deere 125 deck belt listing shows part number GY20072, length 95 in (2,413 mm) and width 0.5 in (13 mm). Confirm the belt against the deck tag, belt decal or parts diagram before ordering |
|---|---|
| Drive belt note | The John Deere 125 drive or transmission belt listing shows part number GX20006, length 95 in (2,413 mm) and width 0.5 in (13 mm). Treat it as partial drive-belt data if no matching width or OEM part number is shown |
| Fitment note | Belts are cheap until you buy the wrong one twice. On the John Deere 125, confirm belt route, old belt label and OEM part number before ordering |
John Deere 125 Belt Size FAQ
Is a close belt length good enough for the John Deere 125 deck?
The deck belt length found is 95 in (2,413 mm). Close is not the same as correct. A belt that is slightly short can overload bearings, while one slightly long can slip or fail to engage the blades cleanly
Should you buy the John Deere 125 belt by length only?
No. The deck belt width found is 0.5 in (13 mm). That is the common 1/2-inch belt width range. Still match the OEM number because the belt angle, fabric wrap and effective length can differ. Use length, width and OEM part number together where possible
If both John Deere 125 belts are the same size, why are the part numbers different?
The deck and drive belts both show 95 in (2,413 mm) long by 0.5 in (13 mm) wide, but the captured part numbers are GY20072 for the deck belt and GX20006 for the drive belt. Same basic size does not always mean same belt; construction, wrap, angle or OEM fitment can differ
Mistakes do happen. Belt specs can change by year, mower deck, pulley layout, serial range and regional parts catalog. Please check the operator manual, belt routing decal, old belt label and official John Deere parts catalog before ordering a replacement belt.
