The best washing machine gear box is the replacement that matches your washer’s exact model and original part number. For GE owners, the WH49X27322 or WH03X33729 may be relevant; Whirlpool-family owners can compare the W11454741, W11454372, and W11449840. These parts are not interchangeable just because they perform similar functions, so check the appliance model before ordering.
| Product | Best For | Key Check |
|---|---|---|
| GE WH49X27322 | Select GE washer repairs | Confirm washer model |
| Whirlpool W11454741 | Select Whirlpool-family models | Check listed replacement numbers |
| TechZupply W11454372 | Repairs matching W11454372 applications | Verify part-number fit |
| Whirlpool W11449840 | Select Whirlpool, Kenmore, Maytag, or Admiral models | Confirm exact model |
| WH03X33729 | Select GE and Hotpoint models | Check superseded part numbers |
GE WH49X27322 Transmission Kit

The GE WH49X27322 is an authentic OEM gear case and transmission kit for various GE washer models. Its listed functions include driving the impeller during agitation, rotating the spin basket, and shifting the drive system between wash and spin modes.
Best for: Owners whose washer model calls for WH49X27322. It was selected because its listed drive functions address both agitation and spin operation. The product information also describes it as a new part quality-tested to GE standards.
Check before buying: The listing names various GE models but does not provide a complete model list in the supplied details. Confirm fit using the washer’s full model number; do not assume the part fits every GE washer.
Whirlpool W11454741 Transmission

This Whirlpool OEM top-load washer transmission is designed for select Whirlpool, Maytag, KitchenAid, and JennAir models. The supplied replacement-number list includes W10006378, W10006402, W10473143, W10473144, W10771758, W10771759, W10870910, W10903969, W11035749, W11255272, and W11393689.
Best for: Buyers replacing one of those listed part numbers in a compatible washer. Its specific cross-reference list makes it useful when identifying a replacement by the old component number.
Check before buying: Brand names alone do not establish compatibility. The listing says it fits many models, not all models from the named brands, so match the complete washer model and part number.
TechZupply W11454372 Gear Case

The TechZupply W11454372 is described as a genuine OEM replacement gear case. Its listed job is to drive the agitator and spin the washer basket. The supplied replacement numbers include W10469845, W10469846, W10735106, W10739660, W10772256, W10795113, W10795114, W10806333, W10870912, W10903968, W11035747, W11048203, and W11393694.
Best for: A repair where the washer’s existing gear case or service information identifies W11454372 or one of its listed replacement numbers. It was selected for its clear function description and detailed part-number references.
Check before buying: The provided details do not list compatible washer brands or models. Verify the appliance model against the part number before ordering.
Whirlpool W11449840 OEM Gear Case

The Whirlpool W11449840 is a genuine OEM washer gear case. The supplied listing identifies select Whirlpool, Kenmore, Maytag, and Admiral washing machines as compatible. It also says the part is designed for the appliance and made to Whirlpool engineering standards.
Best for: Owners of a listed brand whose washer’s model-specific parts information calls for W11449840. It is included as a brand-specific option for shoppers who need this exact gear-case number.
Check before buying: The provided information does not give the replacement part-number list or specific model numbers. Confirm the exact application rather than relying only on the brand name.
WH03X33729 GE Washer Gear Case

The WH03X33729 gear case is described as a genuine OEM part for various GE and Hotpoint washers. It drives the impeller during the wash cycle, rotates the basket during spin, and shifts the drive system between those modes. The supplied information says it replaces WH38X24475 and WH38X27335.
Best for: GE or Hotpoint owners whose washer calls for WH03X33729, WH38X24475, or WH38X27335. Its listed operating functions and replacement numbers help distinguish it from other washer gear cases.
Check before buying: The listing notes that the part may look different from earlier versions. Confirm the functional replacement and model fit before purchase.
Buying Guide: How To Choose A Washer Gear Box
How can you confirm the correct part?
Find the washer’s complete model number on its identification label, then check the model-specific parts information. Compare that information with the gear box’s part number and any stated replacement numbers. A shared brand or similar appearance is not enough to establish fit.
Should you choose an OEM or universal part?
These selections include OEM-described assemblies intended for particular model applications. Universal reducers may have different dimensions, shaft styles, tooth counts, or mounting arrangements. Choose a universal component only when its measurements and design match the original part and washer requirements.
What symptoms make a gear case worth investigating?
A washer that does not agitate, spin, or shift correctly may have a drive-system problem, but those symptoms do not prove the gear case is faulty. Check the washer’s troubleshooting information and inspect related components before replacing a transmission or gear case.
What measurements or numbers should you compare?
For a model-specific assembly, prioritize the washer model and the exact part number. For a reducer-style component, compare shaft dimensions, tooth count, mounting-hole pattern, and overall size with the original part. The provided product details do not establish universal compatibility across machines.
Frequently Asked Questions
Are washing machine gear boxes interchangeable?
No. Gear cases vary by washer model and part number. Use the model-specific parts reference to confirm compatibility.
Does a gear case control both agitation and spin?
Some listed assemblies drive the agitator or impeller, rotate the spin basket, and shift the drive system between wash and spin modes.
Can I select a replacement by washer brand alone?
No. The products listed fit select models, and a brand can use multiple different gear cases. Verify the full model number and part number.
What does a replacement part number mean?
It identifies a number the listing says the part replaces. Confirm that the replacement number applies to your exact washer before ordering.