The John Deere GX345 deck belt part number found is GX345. The drive belt part numbers found are GX345 and M144202. The drive belt size found is 85 in (2,159 mm) long by 0.5 in (13 mm) wide.
John Deere GX345 Belt Size and Part Numbers
| Mower deck belt part number | GX345 |
|---|---|
| Drive belt part number | GX345 and M144202 |
| Drive belt length | 85 in (2,159 mm) |
| Drive belt width | 0.5 in (13 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
John Deere GX345 Belt Notes
| Mower deck belt note | The John Deere GX345 deck belt part number captured here is GX345. Use the listed value as a buying guide, not a blind substitute for the deck-specific parts diagram |
|---|---|
| Drive belt note | The John Deere GX345 drive or transmission belt listing shows part numbers GX345 and M144202, length 85 in (2,159 mm) and width 0.5 in (13 mm). This is separate from the mower deck belt |
| Fitment note | For the John Deere GX345, use the listed specs as a buying guide, but confirm against the operator manual, parts diagram or belt label before spending money |
John Deere GX345 Belt Size FAQ
Why can the correct John Deere GX345 drive belt still not pull properly?
The drive belt length found is 85 in (2,159 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
Can you replace the John Deere GX345 belt with the same length but different width?
The drive 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. A belt with the wrong top width can ride too high or too low in the pulley even if the length looks right
How do you avoid mixing up the John Deere GX345 deck and drive belts?
Use the belt position first: deck belt part number GX345 and drive belt part numbers GX345 and M144202. A deck belt number does not automatically fit the drive system, even when an aftermarket listing makes the cross-reference look close
What should you double-check with the John Deere GX345 deck belt part number?
The captured deck belt number is GX345. Because the length and width are missing here, check the old belt label, deck tag or parts diagram before trusting a non-OEM cross-reference
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.
