The John Deere 318 deck belt part number found is M41668. The drive belt part number found is M805202. The drive belt size found is 83 in (2,108 mm) long by 0.5 in (13 mm) wide.
John Deere 318 Belt Size and Part Numbers
| Mower deck belt part number | M41668 |
|---|---|
| Drive belt part number | M805202 |
| Drive belt length | 83 in (2,108 mm) |
| Drive belt width | 0.5 in (13 mm) |
Belt Size Comparison Chart
Belt length comparison
Belt width comparison
John Deere 318 Belt Notes
| Mower deck belt note | The John Deere 318 deck belt part number captured here is M41668. Use the listed value as a buying guide, not a blind substitute for the deck-specific parts diagram |
|---|---|
| Drive belt note | The John Deere 318 drive or transmission belt listing shows part number M805202, length 83 in (2,108 mm) and width 0.5 in (13 mm). This is separate from the mower deck belt |
| Fitment note | Belts are cheap until you buy the wrong one twice. On the John Deere 318, confirm belt route, old belt label and OEM part number before ordering |
John Deere 318 Belt Size FAQ
What should you check when fitting a 83 in (2,108 mm) drive belt on the John Deere 318?
The drive belt length found is 83 in (2,108 mm). This is a mid-length belt run, so routing and idler position still matter more than just matching a close-looking belt. Also check the idler spring and pulley grooves because drive belts can slip under load even when they look fine at idle
Can you replace the John Deere 318 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 318 deck and drive belts?
Use the belt position first: deck belt part number M41668 and drive belt part number M805202. 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 318 deck belt part number?
The captured deck belt number is M41668. 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.
