Parts for 31AH55TH799 — MTD

We found 77 parts confirmed to fit the MTD 31AH55TH799.

Compatibility table

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 31AH55TH799: 74604229B (Clutch Drive Cable), 777D16350 (Snowblower Label), 684041074033 (Flint Mica), 777I22339 (MTD Snowblower Chute Control and Starting Instructions Decal), 68404107A (Snowblower Auger Assembly, Left), 68404107A4028 (Snowblower Auger, Left), 68404107A0499 (Spiral Assembly), 68404107A0689 (Spiral Assembly), 68404107A4021 (Spiral Assembly), 68404107A4033 (Spiral Assembly), 68404107A0691 (Spiral Assembly, Left), 63404137 (Whl Comp-rh), 790001850691 (MTD Snowblower Drive Shaft Retainer, Left (Black Jack)), 7360626 (MTD Snowblower Flat Washer), 68404159C (MTD Snowblower Friction Wheel Assembly), 72504393 (MTD Snowblower Heated Hand Grip Switch), 68404107A4044 (Snowblower Auger, Left), 74104076 (Snowblower Bearing), 777I22363 (Snowblower Decal), 777D21062 (Snowblower Fuel Tank Craftsman Logo Decal), 68404107A0606 (Spiral Assembly), 68404107A0650 (Spiral Assembly), 68404107A0662 (Spiral Assembly), 68404107A0674 (Spiral Assembly), 68404107A0709 (Spiral Assembly), 68404107A0723 (Spiral Assembly), 61804287 (Dog), 777I22340 (MTD Snowblower Auger and Drive Control Instructions Decal), 74705116 (MTD Snowblower Chute Rod), 94604528B (Snowblower 4-Way Clutch Cable), 7150150 (Snowblower Roll Pin), 634041360911 (MTD Snowblower Wheel Assembly, Right), 634041370911 (Snowblower Wheel Assembly, Right), 68404107A0638 (Snowblower Auger Assembly, Left), 91804322A (MTD Snowblower Drive Shaft Assembly), 75306152 (Snowblower Chute Worm Gear).

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 31AH55TH799: 74904191A0691 (Handle, Upper Right), 68404267A (Snowblower Auger Housing, 30-in), 68404267A0668 (Housing Assembly), 79000316 (Frame Cover), 684041070716 (Deck Housing (Yellow)), 75306153 (MTD Snowblower Chute Control Housing), 79000096A0637 (Snowblower Auger Cable Tension Bracket), 73107031 (Snowblower Chute Control Handle Release Trigger), 790001860691 (Snowblower Drive Shaft Outer Housing), 61804288 (Snowblower Wheel Axle Gear), 75004474 (Snowblower Wheel Axle Support Tube), 73105297 (Lawn & Garden Equipment Spacer, 0.76-in), 777I23013 (Snowblower Heater Handles Decal), 71004879 (Snowblower Machine Screw), 71004353 (Snowblower Screw), 93804180 (Snowblower Wheel Axle), 79000096B0637 (Craftsman Snowblower Auger Cable Tension Bracket (Powder Black)), 98404324A (MTD Snowblower Chute Control Handle Shaft), 75306151 (Snowblower Chute Control Handle Assembly), 7101256 (Yard-Man Lawn & Garden Equipment Hex Screw).

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 31AH55TH799: 72505326 (MTD Snowblower Headlight Bulb).

Drive system (belts, pulleys, motors)

Symptom: A drum or tub that won't turn, a burning-rubber smell, or a loud thump or squeal during a cycle.

Check: With power off, turn the drum or tub by hand -- resistance or grinding points to the motor or a bearing, and a cracked, glazed, or snapped belt is visible once the cabinet is open.

Parts in this group on 31AH55TH799: 63105323 (Snowblower Belt Cover), 490501Y080 (MTD Snowblower Auger Drive Belt, 1/2 x 37-in).

Controls, timers and wiring

Symptom: A cycle that doesn't advance, an unresponsive display, or the unit not starting at all.

Check: Look for burn marks or a burnt smell near the board or terminals, and check whether buttons and knobs respond -- a unit that powers on but won't cycle often traces back to this group.

Parts in this group on 31AH55TH799: 72505148 (Snowblower Heated Hand Grip Wire Harness).

Before you buy

Match 31AH55TH799 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.