The drive belt size found is 81 in (2,057 mm) long by 0.38 in (10 mm) wide.
Cub Cadet 123 Belt Size and Part Numbers
| Drive belt length | 81 in (2,057 mm) |
|---|---|
| Drive belt width | 0.38 in (10 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
Cub Cadet 123 Belt Notes
| Drive belt note | The Cub Cadet 123 drive or transmission belt measurement captured here is length 81 in (2,057 mm) and width 0.38 in (10 mm). Treat it as partial drive-belt data if no matching width or OEM part number is shown |
|---|---|
| Fitment note | The blunt rule with the Cub Cadet 123: part number beats guesswork. If the belt is off by even a small amount, it can slip, squeal, jump pulleys or wear fast |
Cub Cadet 123 Belt Size FAQ
Why can the correct Cub Cadet 123 drive belt still not pull properly?
The drive belt length found is 81 in (2,057 mm). If the tractor still slips, the belt may be routed wrong, the idler may be weak, or the pulley faces may be polished. Length alone does not fix a worn drive system
Should you buy the Cub Cadet 123 belt by length only?
No. The drive belt width found is 0.38 in (10 mm). That is a narrow belt, so do not casually swap in a 1/2-inch belt unless the parts diagram says it crosses over. Too-wide belts can ride high in the pulley. Use length, width and OEM part number together where possible
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 cubcadet.com before ordering a replacement belt.
