2 Pack - 12638000004021 Genuine OEM Midea Dryer Drum Support Roller
The 12638000004021 is a Genuine OEM Midea replacement dryer drum support roller compatible with a wide range of Midea, Criterion, Insignia, and Frigidaire-branded Midea-built electric and gas dryers. The drum support roller is a cylindrical wheel mounted on a fixed shaft inside the dryer cabinet that cradles and supports the outer rim of the drum as it rotates. As the roller wheel wears down or the axle bushing degrades, the drum no longer rides smoothly, causing thumping, rumbling, or squealing noises, or in advanced cases, preventing the drum from turning freely.
This is a single roller, sold individually — most compatible dryers use multiple support rollers, so check your model's parts diagram to confirm the quantity needed for a complete repair. As a Genuine OEM part manufactured by Midea to factory specifications, the 12638000004021 directly replaces 12638000000786 and is also cross-referenced under the Frigidaire-branded catalog number 5304511415, since Frigidaire-branded units in this size class are built by Midea and share the same roller component. Installs in 30–45 minutes with basic hand tools.
Quick Answer
The 12638000004021 Genuine OEM Midea Dryer Drum Support Roller fixes Midea, Criterion, Insignia, and Frigidaire-branded Midea-built dryers that are thumping, rumbling, squealing, or where the drum isn't turning smoothly. Sold individually — check your model's parts diagram for the total quantity needed. Genuine OEM. Replaces 12638000000786, Frigidaire 5304511415. Compatible with Midea MLG45N1BWW and related Midea, Criterion, Insignia, and Frigidaire-branded dryer models.
Common Problems This Part Fixes
- Loud thumping or rumbling noise during the drying cycle — worn drum roller wheel
- Squealing or squeaking noise — roller bushing or axle wearing out
- Drum turning unevenly or wobbling — roller no longer supporting the drum smoothly
- Drum not spinning at all — roller(s) worn to the point the drum has dropped off the support path
- Scraping or grinding noise — roller wheel surface worn flat and dragging against the drum rim
- Excessive vibration during the drying cycle
- Visible flat spots, cracks, or uneven wear on the roller wheel
Replaces Part Numbers
This drum support roller directly replaces the following OEM and cross-reference part numbers:
12638000004021, AP7990985, PS18170578, 5304511415, 4056012471.
Contact our support team with your model number if you need confirmation before ordering.
Compatibility
This drum support roller is compatible with select Midea, Criterion, Insignia, and Frigidaire-branded Midea-built dryers, including:
- Midea MLG45N1BWW gas dryer
- Midea MLE, MLG, MLTE, and MLTG series electric and gas dryers (select models)
- Criterion electric and gas dryers (select models)
- Insignia electric and gas dryers (select models)
- Frigidaire-branded dryers built by Midea (select models — see Frigidaire cross-reference 5304511415)
Important: This roller is sold individually. Most dryers on this platform use multiple drum support rollers — check your specific model's parts diagram to confirm the total quantity needed, and consider replacing all rollers at the same time for even drum support. Always verify your model number before ordering.
Key Features
- Genuine OEM part manufactured by Midea to factory specifications — guaranteed fit and performance
- Supports and cradles the drum rim as it rotates for smooth, quiet operation
- Reduces drum noise and wear caused by an aging or damaged roller
- Sold individually — verify total quantity needed per your model's parts diagram
- Replaces 12638000000786 and Frigidaire cross-reference 5304511415
- Compatible with Midea, Criterion, Insignia, and Frigidaire-branded Midea-built dryers
- Installs in 30–45 minutes with basic hand tools
Product Specifications
| Part Number |
12638000004021 |
| Part Type |
Dryer Drum Support Roller |
| Condition |
Genuine OEM |
| Application |
Electric and Gas Dryers (Midea platform) |
| Quantity |
Pack of 2 |
| Compatible Brands |
Midea, Criterion, Insignia, Frigidaire (Midea-built) |
Installation Notes
⚠️ Unplug Dryer Before Starting — Wear Work Gloves Disconnect power (and shut off gas first for gas dryer models) before beginning. Wear work gloves — there are sharp sheet metal edges inside the dryer cabinet. Access the drum rollers by removing the back panel of the dryer. Take a photo of the belt routing and roller positions before removing anything. Release the drive belt from the idler pulley, lift the drum, and set it aside. Each drum roller is mounted on a fixed shaft inside the dryer cabinet, typically secured by a retaining clip. Use needle-nose pliers to remove the old clip, slide the old roller off the shaft, and slide the new roller on. Reinstall the retaining clip to secure the new roller. If your model uses multiple rollers, repeat for each one — replacing all rollers at the same time is recommended for even drum support. Reinstall the drum, re-route the belt, and reassemble the rear panel. Restore power and run a test cycle to confirm quiet, smooth drum operation. Tools needed: Phillips screwdriver, Torx screwdriver (model dependent), needle-nose pliers, work gloves.
Frequently Asked Questions
How many drum rollers does my Midea dryer have?
The number of drum support rollers varies by model on the Midea dryer platform. This listing is for a single roller. Before ordering, look up your dryer's model number in the official parts diagram to confirm how many rollers your specific dryer uses, and order enough to replace all of them if you want even drum support. Replacing all rollers at once — rather than just the noisiest one — is generally the most cost-effective approach since they tend to wear out around the same time.
Does this roller fit my Frigidaire dryer?
Yes, on select models. Some Frigidaire-branded dryers in certain size classes are manufactured by Midea and use the same internal components, including this drum support roller — cross-referenced under Frigidaire part number 5304511415. Always verify your specific Frigidaire model number before ordering to confirm it is a Midea-built unit using this roller.
What is the difference between 12638000004021 and 12638000000786?
These are the same drum support roller. 12638000000786 is an earlier or alternate catalog reference for the identical Midea-manufactured roller, and 12638000004021 is the current manufacturer part number. If your dryer's parts diagram or supplier listing shows 12638000000786, the 12638000004021 is the correct current part and this listing covers both references.
Should I replace the drum belt and idler pulley at the same time?
Since the dryer cabinet must already be opened to access the drum rollers, this is a good opportunity to also inspect the drum belt and idler pulley for wear. These components work together as the drum drive system, and a worn belt or idler pulley can accelerate roller wear (and vice versa). If you notice cracking, fraying, or looseness in the belt, or if the idler pulley wheel doesn't spin freely, replacing them in the same repair can help prevent a near-term repeat teardown.
Is this a Genuine OEM or aftermarket part?
This is a Genuine OEM part manufactured by Midea to factory specifications. It is the exact same drum support roller installed in compatible Midea, Criterion, Insignia, and Frigidaire-branded Midea-built dryers from the factory — guaranteed fit, materials, and performance.
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