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Home/Stand Mixer Parts/Stand Mixer Worm Gear/W10112253
W10112253 Worm Gear Compatible with KitchenAid Whirlpool Kenmore Stand Mixers, Replaces WPW10112253 4162897 4161531 4169830 AP6015102
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Aftermarket Replacement · Factory Direct
OEM-compatible part built to original specifications. Not manufactured by or affiliated with the original equipment brand.

W10112253 Worm Gear Compatible with KitchenAid Whirlpool Kenmore Stand Mixers, Replaces WPW10112253 4162897 4161531 4169830 AP6015102

SKU: W10112253
Repair Time20-35 Minutes
DifficultyModerate
DIY FriendlyYes
Tools Needed
Phillips-head screwdriverFlat-head screwdriverPlastic spudger or pry toolClean cloth or paper towelsFood-grade grease (W11200218 or equivalent)
Qty
Ships from China · 10–20 business days
No sales tax outside CA
or
W10112253 Worm Gear Compatible with KitchenAid Whirlpool Kenmore Stand Mixers, Replaces WPW10112253 4162897 4161531 4169830 AP6015102
In Stock

This Part Fixes These Problems

Mixer Won't Turn / Planetary Stopped

Motor runs but the attachment hub does not rotate. The worm gear drives the planetary assembly — a stripped or sheared gear will cause complete loss of rotation at the hub while the motor continues to spin.

Grinding or Clicking Noise

Audible grinding, ticking, or clicking sounds during mixing, especially under heavy loads like bread dough. Indicates the worm gear teeth are worn, stripped, or shedding plastic debris inside the gearbox.

Jams or Stalls at High Speed or Under Load

Mixer works normally on low speed or with lightweight attachments (wire whip) but stalls or stops when using the dough hook or flat beater at higher speeds. Classic symptom of a partially stripped worm gear.

Plastic Debris in Gearbox Grease

White or grey plastic fragments visible when gearbox is opened. The worm gear is a sacrificial nylon part — debris in the grease confirms gear failure and necessitates replacement along with a full grease clean-out.

Repair Guides

KitchenAid Stand Mixer Won't Turn — 5 Causes & How to Fix
May 30, 2026

Product Description

Why Choose Our W10112253 Worm Gear?

🔧
Built to OEM Specifications Engineered to exact OEM dimensions — 36.5×9.5mm (1.47"×0.37") with 9.5mm inner bore — ensuring precise drop-in fit for all compatible KitchenAid and Whirlpool stand mixer models.
🛡️
Reinforced Nylon + Steel Hub Construction One-piece reinforced design with a high-grade nylon gear bonded to a sturdy metal hub — eliminates the common failure mode of OEM plastic gears separating from the shaft under heavy dough loads.
⚙️
Drives the Planetary Assembly The worm gear is the critical power-transmission link between the motor and the planetary attachment hub. Replacing a stripped gear restores full mixing torque across all 10 speed settings.
🔄
Wide Cross-Reference Compatibility Directly replaces OEM part numbers WPW10112253, WPW10112253VP, 4162897, 4161531, 4169830, AP6015102, AP4295669, PS11748374, AH1491159, EA1491159, PS1491159, 1206513, and W11604364.
💰
Fraction of Shop-Repair Cost Professional mixer repair for a stripped worm gear can cost $150+ in labor alone. This aftermarket gear lets you restore full mixer function yourself in under 30 minutes with basic tools.
🌍
Broad Brand Coverage Compatible with KitchenAid Artisan (KSM150), Classic (K45SS), Professional 5 (KP50), and many more tilt-head and bowl-lift models sold under KitchenAid, Whirlpool, and Kenmore branding worldwide.

💡 Pro Tip: Is Your Worm Gear the Culprit?

Your part is likely the culprit if you notice any of the following:

⚠️ Mixer motor runs but the attachment hub / planetary does not rotate

⚠️ Grinding, clicking, or ticking noise during mixing — especially under load (bread dough, heavy batter)

⚠️ Mixer works fine on low speed or with the wire whip but stalls with the dough hook or flat beater

⚠️ White or grey plastic debris visible in the gearbox grease when you open the mixer head

🔍 Diagnosis tip: The worm gear is intentionally designed as a sacrificial component — it strips first to protect the motor from overload damage. If your mixer jammed on heavy dough and the hub stopped turning, inspect the worm gear before replacing any other parts. When replacing, always clean out old grease, remove all plastic debris, and replenish with food-grade planetary grease (OEM ref: W11200218) to prevent premature re-failure.

📦 What's in the Box

✅ 1× W10112253 Stand Mixer Worm Gear (36.5×9.5mm, nylon + steel hub)

Questions & Answers

Will this worm gear fit my KitchenAid Artisan KSM150PS series mixer?
Answered by Support Team  ·  Mar 15, 2024
Yes. The W10112253 worm gear is compatible with the entire KSM150PS Artisan family, including KSM150PSMH0, KSM150PSBV0, KSM150PSMC, and many color variants. It replaces the OEM part WPW10112253 and is a direct drop-in replacement with no modification required.
My mixer motor runs but the bowl attachment doesn't spin. Is it definitely the worm gear?
Answered by Support Team  ·  Nov 20, 2023
A running motor with no planetary rotation is the most classic symptom of a failed worm gear. The worm gear is intentionally designed as a sacrificial part — it strips to protect the motor from overload damage. Before ordering, open the mixer head and look for plastic debris in the grease, which confirms gear failure. If the gear looks intact, also check the retainer pin on the planetary hub.
Do I need to replace the grease when installing this gear?
Answered by Support Team  ·  Jan 8, 2025
Absolutely yes. When a worm gear strips, plastic debris contaminates the entire gearbox grease. You must remove all old grease and debris before installing the new gear, otherwise the debris will accelerate wear on the new part. Use food-grade planetary grease — the OEM-specified product is Whirlpool W11200218. Apply generously to all gear surfaces before reassembling.
What part numbers does W10112253 replace?
Answered by Support Team  ·  Jul 22, 2024
This replacement worm gear is cross-compatible with the following OEM and reference part numbers: WPW10112253, WPW10112253VP, 4162897, 4161531, 4169830, AP6015102, AP4295669, PS11748374, AH1491159, EA1491159, PS1491159, 1206513, W11604364, and 115798.
I replaced the worm gear but my mixer still stalls under heavy dough load. What else could be wrong?
Answered by Support Team  ·  Feb 10, 2026
If the new worm gear looks undamaged but the mixer stalls under load (dough hook or flat beater), the issue is likely with the motor rather than the gear. The most common cause is weak motor windings or worn carbon brushes. To check the brushes, remove and inspect them visually — worn brushes are a quick, inexpensive fix. To test the stator windings, use an ohmmeter set to RX1: connect leads to the red and black wires on the upper coil and check for low resistance. A low reading indicates the coil is good; infinite resistance indicates an open winding requiring motor replacement.

We typically respond within 1 business day. Include your appliance model number for the fastest answer.




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    Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.

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