The Kubota ZG123S deck belt part number found is 77700-05581. The deck belt size found is 149.62 in (3,800 mm) long by 0.6 in (15 mm) wide. The drive belt part number found is K3011-13560. The drive belt size found is 69 in (1,753 mm) long by 0.5 in (13 mm) wide.
Kubota ZG123S Belt Size and Part Numbers
| Mower deck belt part number | 77700-05581 |
|---|---|
| Mower deck belt length | 149.62 in (3,800 mm) |
| Mower deck belt width | 0.6 in (15 mm) |
| Drive belt part number | K3011-13560 |
| Drive belt length | 69 in (1,753 mm) |
| Drive belt width | 0.5 in (13 mm) |
| Deck size | 48 in deck |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
Mower deck size comparison
Kubota ZG123S Belt Notes
| Mower deck belt note | The Kubota ZG123S deck belt listing shows part number 77700-05581, length 149.62 in (3,800 mm) and width 0.6 in (15 mm). Confirm the belt against the deck tag, belt decal or parts diagram before ordering |
|---|---|
| Drive belt note | The Kubota ZG123S drive or transmission belt listing shows part number K3011-13560, length 69 in (1,753 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 |
| Deck size note | The Kubota ZG123S deck size captured here is 48 in deck. This helps separate 42-inch, 48-inch, 54-inch and larger deck belt setups |
| Fitment note | Belts are cheap until you buy the wrong one twice. On the Kubota ZG123S, confirm deck size, belt route and OEM part number before ordering |
Kubota ZG123S Belt Size FAQ
Is a close belt length good enough for the Kubota ZG123S deck?
The deck belt length found is 149.62 in (3,800 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 Kubota ZG123S belt by length only?
No. The deck belt width found is 0.6 in (15 mm). That is wider than many light mower belts, so do not replace it with a thinner belt just because the length is close. It may sit too low in the pulley and slip. Use length, width and OEM part number together where possible
Why are there separate belt part numbers for the Kubota ZG123S?
The captured values separate the belt jobs: deck belt part number 77700-05581 and drive belt part number K3011-13560. Treat each number as position-specific and confirm it against the parts diagram before ordering
What is the fastest way to confirm the Kubota ZG123S deck belt?
Start with the captured 48 in deck deck and the deck belt value 149.62 in (3,800 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 kubotausa.com before ordering a replacement belt.
