The John Deere 145 deck belt part number found is GX21833. The deck belt size found is 95 in (2,413 mm) long by 0.5 in (13 mm) wide. The drive belt part numbers found are GX20006 and GX21833. The drive belt size found is 88 in (2,235 mm) long by 0.5 in (13 mm) wide.
John Deere 145 Belt Size and Part Numbers
| Mower deck belt part number | GX21833 |
|---|---|
| Mower deck belt length | 95 in (2,413 mm) |
| Mower deck belt width | 0.5 in (13 mm) |
| Drive belt part number | GX20006 and GX21833 |
| Drive belt length | 88 in (2,235 mm) |
| Drive belt width | 0.5 in (13 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
John Deere 145 Belt Notes
| Mower deck belt note | The John Deere 145 deck belt listing shows part number GX21833, length 95 in (2,413 mm) and width 0.5 in (13 mm). Match the old belt, deck size and routing before spending money |
|---|---|
| Drive belt note | The John Deere 145 drive or transmission belt listing shows part numbers GX20006 and GX21833, length 88 in (2,235 mm) and width 0.5 in (13 mm). Do not mix it up with the deck belt because the routing and job are different |
| Fitment note | Before ordering a John Deere 145 belt, compare the old belt routing, pulley layout and deck size if available. A close-looking belt can still be wrong |
John Deere 145 Belt Size FAQ
Why can the correct John Deere 145 deck belt still slip?
The deck belt length found is 95 in (2,413 mm). Even with the right length, a weak idler spring, worn pulley groove or wrong belt path can make it slip. The part number and routing matter together
Why does 0.5 in (13 mm) belt width matter on the John Deere 145?
The captured deck belt width is 0.5 in (13 mm). Pulley grooves are cut for a matching belt profile. Wrong width can cause squeal, heat, poor blade speed or fast belt wear
How do you avoid mixing up the John Deere 145 deck and drive belts?
Use the belt position first: deck belt part number GX21833 and drive belt part numbers GX20006 and GX21833. 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.
