The John Deere 312 deck belt part number found is M144202. The drive belt part number found is M151277.
John Deere 312 Belt Size and Part Numbers
| Mower deck belt part number | M144202 |
|---|---|
| Drive belt part number | M151277 |
John Deere 312 Belt Notes
| Mower deck belt note | The John Deere 312 deck belt part number captured here is M144202. Use the listed value as a buying guide, not a blind substitute for the deck-specific parts diagram |
|---|---|
| Drive belt note | The John Deere 312 drive or transmission belt part number captured here is M151277. This is separate from the mower deck belt |
| Fitment note | Before ordering a John Deere 312 belt, compare the old belt routing, pulley layout and deck size if available. A close-looking belt can still be wrong |
John Deere 312 Belt Size FAQ
How do you avoid mixing up the John Deere 312 deck and drive belts?
Use the belt position first: deck belt part number M144202 and drive belt part number M151277. 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 312 deck belt part number?
The captured deck belt number is M144202. 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
Is the captured John Deere 312 drive belt part number enough to buy from?
The captured drive belt number is M151277. That is useful for OEM lookup, but the drive belt length and width were not fully captured here. It is weak data for guessing an aftermarket belt by size alone
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.
