Parts for 31BS644E129 — MTD
We found 17 parts confirmed to fit the MTD 31BS644E129.
Same parts list as 31AE644G352 (MTD). 31BS644E129 shares an identical confirmed parts list with 31AE644G352 (MTD). That page is the canonical version of this parts list — use it if you want the primary reference, or stay here since the list below is exactly the same for 31BS644E129.
Compatibility table
| Part # | Part | Also fits | Reference price |
|---|---|---|---|
| 7470921 | Rod:shift As | 10 models | $28.18 · Amazon |
| 9251300 | Snowblower Headlight | 10 models | $101.49 · Amazon |
| 73104044 | Spacer | 10 models | $8.60 · Amazon |
| 7055234A | Clutch Lever | 11 models | $62.62 · Amazon |
| 684041840637 | MTD Snowblower Auger, Right | 14 models | $143.97 · Amazon |
| 33329H | Tecumseh Lawn & Garden Equipment Engine Electric Starter | 14 models | $293.06 · Amazon |
| 7110910A | MTD Snowblower Shaft-28Hrd | 15 models | $149.52 · Amazon |
| OEM390987 | Starter Kit | 28 models | — · Amazon |
| 7845581A | Shave Plate | 33 models | — · Amazon |
| 7845582A | Shave Plate | 33 models | $49.13 · Amazon |
| 7100890A | MTD Snowblower Shear Bolt | 69 models | $2.59 · Amazon |
| 7410309 | Bearing | 84 models | $19.87 · Amazon |
| 6290071 | Extension Cord | 106 models | $16.86 · Amazon |
| 7320264 | Return Brake | 107 models | $2.16 · Amazon |
| 7200284 | Knob Wing Nut | 391 models | $11.23 · Amazon |
| 7360119 | Lock Washer | 529 models | $2.16 · Amazon |
| 7100599 | MTD Lawn Tractor Screw | 1,116 models | $5.81 · Amazon |
Prices shown are an informational reference range only, not an offer or an Amazon price — RepairKitHub does not sell parts directly. Each part links to an Amazon search so you can compare current listings yourself.
Common failure areas on this model
The confirmed parts above group into a handful of failure areas. Here is what each points to and how to check it before you order anything.
General hardware and mounting parts
Symptom: A small mechanical or mounting part has failed, cracked, or gone missing.
Check: Compare the physical shape and mounting points to the original piece, and confirm the exact part number against your model plate before ordering.
Parts in this group on 31BS644E129: 7470921 (Rod:shift As), 7055234A (Clutch Lever), 684041840637 (MTD Snowblower Auger, Right), 33329H (Tecumseh Lawn & Garden Equipment Engine Electric Starter), 7110910A (MTD Snowblower Shaft-28Hrd), OEM390987 (Starter Kit), 7845581A (Shave Plate), 7845582A (Shave Plate), 7100890A (MTD Snowblower Shear Bolt), 7410309 (Bearing), 6290071 (Extension Cord), 7320264 (Return Brake), 7360119 (Lock Washer).
Interior lighting
Symptom: The interior light doesn't turn on when the door opens.
Check: Confirm power is reaching the socket, then check the door-activated light switch before assuming the bulb itself is at fault.
Parts in this group on 31BS644E129: 9251300 (Snowblower Headlight).
Storage, trim and cosmetic hardware
Symptom: A cracked shelf, broken door bin, worn hinge, or missing trim piece -- cosmetic and storage wear rather than a functional breakdown.
Check: Match the physical dimensions and mounting tabs of the old part before ordering; these pieces are often model-specific even between visually similar models.
Parts in this group on 31BS644E129: 73104044 (Spacer), 7200284 (Knob Wing Nut), 7100599 (MTD Lawn Tractor Screw).
Before you buy
Match 31BS644E129 exactly against the model and serial plate on the appliance itself before ordering anything — a single mismatched character can point to a different production run with different parts. Then check the part number printed or stamped on the part you are replacing against the part numbers in the table above; the printed number is the most reliable way to confirm fitment when a model has gone through multiple production runs. RepairKitHub does not sell parts directly — every part link above routes to an Amazon search for that part number so you can compare current listings and sellers yourself.
How to confirm this is your model
Check inside a door opening, on a back or side panel, or behind a removable panel or drawer for a label printed with the model and serial number. Match every character exactly, including letters and dashes at the end — appliance model numbers often have similar prefixes but different suffixes for different production runs.
Still not sure?
Use the model lookup tool to search by model or part number, or start from the symptom your appliance is showing.