The John Deere STX38 deck belt part number found is M119539. The deck belt size found is 60 in (1,524 mm) long by 0.5 in (13 mm) wide. The drive belt part numbers found are M118760 and M125218. The drive belt size found is 105 in (2,667 mm) long by 0.5 in (13 mm) wide.
John Deere STX38 Belt Size and Part Numbers
| Mower deck belt part number | M119539 |
|---|---|
| Mower deck belt length | 60 in (1,524 mm) |
| Mower deck belt width | 0.5 in (13 mm) |
| Drive belt part number | M118760 and M125218 |
| Drive belt length | 105 in (2,667 mm) |
| Drive belt width | 0.5 in (13 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
John Deere STX38 Belt Notes
| Mower deck belt note | The John Deere STX38 deck belt listing shows part number M119539, length 60 in (1,524 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 STX38 drive or transmission belt listing shows part numbers M118760 and M125218, length 105 in (2,667 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 | Before ordering a John Deere STX38 belt, compare the old belt routing, pulley layout and deck size if available. A close-looking belt can still be wrong |
John Deere STX38 Belt Size FAQ
What should you watch when fitting a 60 in (1,524 mm) deck belt on the John Deere STX38?
A 60 in (1,524 mm) deck belt leaves little room for sloppy routing. This is a mid-length belt run, so routing and idler position still matter more than just matching a close-looking belt. Before blaming the new belt, compare the belt path to the routing decal and make sure it sits on the correct side of each keeper
Should you buy the John Deere STX38 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
How do you avoid mixing up the John Deere STX38 deck and drive belts?
Use the belt position first: deck belt part number M119539 and drive belt part numbers M118760 and M125218. A deck belt number does not automatically fit the drive system, even when an aftermarket listing makes the cross-reference look close
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.
