The John Deere 1580 deck belt part number found is M154202. The deck belt size found is 108 in (2,743 mm) long by 0.5 in (13 mm) wide. The drive belt part number found is M144202. The drive belt size found is 95.5 in (2,426 mm) long by 1 in (25 mm) wide.
John Deere 1580 Belt Size and Part Numbers
| Mower deck belt part number | M154202 |
|---|---|
| Mower deck belt length | 108 in (2,743 mm) |
| Mower deck belt width | 0.5 in (13 mm) |
| Drive belt part number | M144202 |
| Drive belt length | 95.5 in (2,426 mm) |
| Drive belt width | 1 in (25 mm) |
| Deck size | 72 in deck |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
Mower deck size comparison
John Deere 1580 Belt Notes
| Mower deck belt note | The John Deere 1580 deck belt listing shows part number M154202, length 108 in (2,743 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 1580 drive or transmission belt listing shows part number M144202, length 95.5 in (2,426 mm) and width 1 in (25 mm). Treat it as partial drive-belt data if no matching width or OEM part number is shown |
| Deck size note | The John Deere 1580 deck size captured here is 72 in deck. This helps separate 42-inch, 48-inch, 54-inch and larger deck belt setups |
| Fitment note | Before ordering a John Deere 1580 belt, compare the old belt routing, pulley layout and deck size if available. A close-looking belt can still be wrong |
John Deere 1580 Belt Size FAQ
What should you watch when fitting a 108 in (2,743 mm) deck belt on the John Deere 1580?
A 108 in (2,743 mm) deck belt leaves little room for sloppy routing. This is a longer mower belt run, so twist, idler alignment and the belt keeper positions matter. A belt can be the right length and still fail if it is routed wrong. Before blaming the new belt, compare the belt path to the routing decal and make sure it sits on the correct side of each.
Should you buy the John Deere 1580 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
Why are there separate belt part numbers for the John Deere 1580?
The captured values separate the belt jobs: deck belt part number M154202 and drive belt part number M144202. Treat each number as position-specific and confirm it against the parts diagram before ordering
What is the fastest way to confirm the John Deere 1580 deck belt?
Start with the captured 72 in deck deck and the deck belt value 108 in (2,743 mm). Then check the belt routing decal or parts diagram so you do not order a belt for the wrong deck
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.
