Parts for 403131 — Murray

We found 17 parts confirmed to fit the Murray 403131.

Compatibility table

All 17 confirmed parts, ordered so parts that fit fewer models (more specific to this appliance) appear first.
Part #PartAlso fitsReference price
421409MABriggs & Stratton Lawn Tractor Ground Drive Idler Pulley6 models$26.71 · Amazon
021024MALawn Tractor Mandrel Shaft10 models$15.24 · Amazon
024527MALimit Switch10 models$9.56 · Amazon
015X71MANut#10-24 Ke10 models$3.30 · Amazon
STD324460V-Belt, 46-in10 models$11.99 · Amazon
17X57ZWasher10 models$2.16 · Amazon
21022Disconnect11 models$11.95 · Amazon
703948Lawn & Garden Equipment Push Nut17 models$32.66 · Amazon
703588Lawn & Garden Equipment Cap Screw20 models$7.60 · Amazon
166X4MASPRING-TORSI21 models$12.97 · Amazon
420613MABriggs & Stratton Lawn Tractor Ground Drive Idler Pulley22 models$26.71 · Amazon
492574MALawn Tractor Mandrel Housing28 models$64.87 · Amazon
703159Lawn & Garden Equipment Bolt29 models$7.31 · Amazon
703585Lawn & Garden Equipment Cap Screw30 models$8.26 · Amazon
703409Lawn Tractor Nut74 models$10.66 · Amazon
85717Edger Blade, 2-pack141 models$9.99 · Amazon
703251Briggs & Stratton Snowblower Nut188 models$9.54 · 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.

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 403131: 421409MA (Briggs & Stratton Lawn Tractor Ground Drive Idler Pulley), STD324460 (V-Belt, 46-in), 420613MA (Briggs & Stratton Lawn Tractor Ground Drive Idler Pulley).

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 403131: 021024MA (Lawn Tractor Mandrel Shaft), 024527MA (Limit Switch), 015X71MA (Nut#10-24 Ke), 17X57Z (Washer), 21022 (Disconnect), 703948 (Lawn & Garden Equipment Push Nut), 703159 (Lawn & Garden Equipment Bolt), 703409 (Lawn Tractor Nut), 85717 (Edger Blade, 2-pack), 703251 (Briggs & Stratton Snowblower Nut).

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 403131: 703588 (Lawn & Garden Equipment Cap Screw), 166X4MA (SPRING-TORSI), 492574MA (Lawn Tractor Mandrel Housing), 703585 (Lawn & Garden Equipment Cap Screw).

Before you buy

Match 403131 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.