Parts for Whirlpool 4KG25G0XWH4: 02 - Case, Gearing And Planetary Unit Parts

The Drive Motor is an OEM part for KitchenAid stand mixers. This part drives the mechanism that mixes, kneads, and blends ingredients with precision. 

Over time, the drive motor may exhibit signs of wear or failure due to extended use, overheating, or electrical issues. It's essential to recognize these symptoms early to maintain your mixer's performance and longevity.

Symptoms of a bad Mixer Drive Motor include:

• The mixer not starting or operating intermittently
• A noticeable decrease in power or efficiency during use
• Unusual noises, such as grinding or humming, indicating internal wear or damage

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

Cap Hub covers and protects the appliance's hub, restoring a finished appearance and helping keep debris away from internal components. Use when the original hub cap is cracked, missing or visibly worn. What it does:

• Covers and conceals the drive/tub hub for a finished look.
• Helps keep lint and debris away from the hub area.
• Replaces cracked, broken or missing hub caps that expose the hub.
• Check the model-specific diagram for exact fit and orientation.

• Disconnect power (and water if applicable) before beginning any service.
• Part typically snaps or presses into place; the appliance's exploded diagram for the correct removal/replacement procedure.
• Do not force the part; inspect surrounding components and replace any damaged mounting hardware as needed.

The Thumb Screw is an OEM replacement part for Whirlpool stand mixers. It acts as a fastener for securely attaching mixing attachments like the flat beater, whisk, or dough hook onto the power hub. Color: Black. It measures about 1-½” wide by ¾” high.

Causes of a bad thumb screw can include wear and tear from repeated securing and loosening of mixing attachments over time. 

Symptoms of a bad thumb screw include:

• Mixing tools detaching or falling off during use  
• Difficulty attaching or removing attachments
• Looseness where the screw mounts to the power hub

This OEM Whirlpool part is also compatible with KitchenAid, Kenmore, and some Bosch and Breville stand mixers.

The Power Cord is an OEM component specifically designed for Whirlpool stand mixers. Located at the rear base of the mixer, it safely delivers current to operate mixing attachments, speeds, and functions. 

Causes of a bad power cord include cracking or pulling at the entrance/exit points over years of use. Acute damage like punctures or burns requires replacement.

Symptoms of a faulty power cord include:

• Loose, interrupted connections when plugged in  
• Exposed or frayed internal filaments
• Tripping circuit breakers more frequently
• Buzzing, zapping, or dead mixer response

This OEM Whirlpool replacement cord ensures problem-free current transmission. Installed promptly, it prevents shock risks or fire hazards due to compromised integrity.  

Compatible also with some KitchenAid and Proctor Silex mixers, this part maintains crucial convenience and performance. Protect your valued kitchen tool with an OEM power cord replacement as needed.

The Power Cord is an OEM part for Whirlpool mixers. It provides the necessary electrical connection between your mixer and the power source, enabling your mixer to run reliably and safely.

Symptoms of a faulty power cord include:

• Intermittent power loss
• Exposed or frayed wires
• Loose connection or difficulty in maintaining power

A bad power cord can occur due to wear and tear, accidental damage, or electrical issues. If you experience problems such as intermittent power loss, exposed wires, or a loose connection, it may be time to replace the power cord.

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Transmission Housing is an OEM part for Whirlpool mixers. This component encases the transmission, which is responsible for transferring power from the motor to the mixing attachments. The housing ensures the transmission is protected from external damage and maintains the alignment and stability of internal components.

Over time, the transmission housing can become compromised due to regular use, exposure to food and moisture, or accidental impacts. Damage to this part can lead to misalignment, which affects the performance of the mixer.

Symptoms of a bad transmission housing include:

• Unusual noises during operation
• Mixing attachments not spinning properly
• Visible cracks or damage to the housing
• Leaking grease from the transmission area

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

Includes black knob

The Speed Control Assembly is an OEM part for Whirlpool mixers, integral to managing the mixing speed to accommodate various ingredients and recipes efficiently. This assembly is crucial for the precise control over the mixer's speed, ensuring that your mixing tasks are performed with the desired consistency and texture.  

Common causes of a faulty Speed Control Assembly can vary, such as electrical problems resulting in erratic mixer speeds, wear and tear from regular usage, physical damage to the control assembly, or faulty wiring and connections within the mixer.

Symptoms of a bad Speed Control Assembly include:

• The mixer operates at one speed regardless of the setting
• Inability to adjust the mixer's speed
• The mixer fails to start or exhibits intermittent stopping during use
• Unusual noises or behavior when changing speeds

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

Includes black knob

The Speed Control Assembly is an OEM part for Whirlpool mixers, integral to managing the mixing speed to accommodate various ingredients and recipes efficiently. This assembly is crucial for the precise control over the mixer's speed, ensuring that your mixing tasks are performed with the desired consistency and texture.  

Common causes of a faulty Speed Control Assembly can vary, such as electrical problems resulting in erratic mixer speeds, wear and tear from regular usage, physical damage to the control assembly, or faulty wiring and connections within the mixer.

Symptoms of a bad Speed Control Assembly include:

• The mixer operates at one speed regardless of the setting
• Inability to adjust the mixer's speed
• The mixer fails to start or exhibits intermittent stopping during use
• Unusual noises or behavior when changing speeds

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

The Washer is an OEM replacement part for Kitchenaid stand mixers. This washer is used as a spacer and insulator between gears to provide protection to the planetary bushing on the stand mixer.

Causes of a bad washer can include wear over time allowing increased play between gears, or deformation from heavy use that compromises its insulating properties.

Symptoms of a bad washer include:

• Excessive noise and vibration from the gear assembly
• Premature failure of gears or other components
• Reduced power transmission and mixing performance

This OEM replacement is also compatible with Maytag, Whirlpool, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

This small hardware washer fits under a screw or nut to spread clamping force and protect the mounting surface. Replacing a worn or missing washer helps keep assemblies secure and can reduce rattling, vibration, and premature wear.

• Distributes load under a fastener to prevent pull-through and surface damage
• Maintains proper spacing and alignment between parts in an assembly
• Helps resist loosening from vibration when tightened correctly
• Symptoms of wear/failure: fastener won't stay tight, rattling or wobble, visible deformation of the old washer

• Disconnect power; shut off water supply if working on a water-bearing appliance
• Access and support the assembly; note the stack order/orientation of any spacers or bushings
• Install the new washer and reinstall the fastener; tighten snugly—do not overtighten
• Confirm proper alignment and operation before closing up panels

The Pinion Gear is an OEM replacement part specific to KitchenAid stand mixers. It is a small gear located within the planetary mixing mechanism. The pinion gear works with the worm gear to power the planetary action that thoroughly mixes ingredients.

Symptoms of a bad pinion gear include:

• Uneven or incomplete mixing
• The mixing arm assembly failing to spin properly
• Grinding noises coming from the base of the mixer
• “Skipping” while under a load

Causes of a bad pinion gear can include cracked, worn, or broken teeth from heavy use over time. Food debris or other obstructions around the gear can damage it as well.

This OEM KitchenAid replacement is compatible with additional stand mixer models from brands like Kenmore, some Whirlpool, and Maytag mixers.

The Retaining Clip is an OEM part for Whirlpool stand mixers. This small but essential part ensures the stability and secure fitting of various mixer components, contributing significantly to the appliance's overall performance and durability. Its primary role is to hold parts in place, preventing movement that could lead to wear or malfunction during operation.

Stand mixers are subjected to a variety of stresses, particularly when mixing thick doughs or other dense mixtures. The retaining clip's integrity is vital in these situations, as it helps to maintain the correct alignment and functioning of the mixer's moving parts. 

Symptoms of a bad Retaining Clip in a stand mixer include:

• Components such as beaters or attachments becoming loose or detaching during use.
• Unusual vibration or noise 
• Difficulty in attaching or detaching mixer attachments  

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

This agitator shaft assembly is the vertical drive shaft used in select stand mixers. It transmits power through the planetary to spin your beater or whisk, helping restore smooth, consistent mixing when the original shaft is worn, bent, or stripped.

• Transfers motor power from the gearcase to the beater hub
• Maintains alignment and smooth rotation of mixer attachments
• Wear or damage can cause wobble or excess play at the attachment
• Help resolve attachments not turning, intermittent spinning, or clicking/grinding from the planetary area

• Unplug the mixer before servicing; let moving parts stop fully
• Access typically requires removing the planetary and opening the gearcase—note gear, shim, and washer order during disassembly
• Inspect internal gears and bushings for wear; clean and re-lubricate before reassembly

The Planetary Shaft Bearing is an OEM part for Whirlpool stand mixers. It supports the planetary shaft, ensuring smooth rotation and proper mixing action. This bearing is crucial for maintaining the efficiency and performance of the mixer, allowing the beater to move effectively through the ingredients.

Signs of a bad bearing can include unusual noises, such as grinding or squeaking, during operation, or increased friction that makes the mixer struggle or overheat.

Symptoms of a bad planetary shaft bearing include:

• Unusual noises during mixing
• The mixer struggling to operate smoothly
• Increased heat generated by the mixer
• Reduced mixing efficiency or performance

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Worm Gear is an OEM part for Whirlpool stand mixers. It is integral to the mixer's drive system, facilitating the transfer of power from the motor to the mixing attachment. This gear is specifically designed to handle varying levels of resistance from different ingredients, ensuring that your mixer maintains consistent performance and speed.

Symptoms of a failing Worm Gear include:

• The mixer not operating at its set speed
• A grinding or whirring sound during use
•  The mixer head not turning despite the motor running
• Inconsistent mixing or the inability to mix stiff doughs

Causes of a bad worm gear often involve strain from mixing heavy loads, which can wear down the teeth of the gear, or lubrication issues that increase friction and heat within the gear assembly.

This OEM part is also compatible with KitchenAid and certain Kenmore models.

Small but critical: this retaining pin secures the drive components in the planetary so your stand mixer transmits power reliably to the beater and attachments, helping restore steady mixing when the original pin is missing or worn.

What it does

• Locks the gear/shaft connection inside the planetary for positive drive
• Helps address symptoms like beater not turning, intermittent drive, or a loose/descending planetary
• Works in conjunction with the worm-follower and bevel/pinion gears
• Useful when the original pin is damaged during service or shears under load

What’s included
One retaining (dowel) pin, sold individually.

Install notes

• Unplug the mixer; lay it on its side and support the planetary
• Drive the old pin out with a small punch; align and tap the new pin in flush
• If the gearcase is open, clean and re-grease per service guidance
• Run at low speed first to verify smooth operation before full use

The Worm Follower Gear is an OEM part for Whirlpool stand mixers. It is a crucial component within the gearbox, playing a pivotal role in the transmission of power from the motor to the mixing action. This gear works in conjunction with other gears to reduce speed and increase torque, enabling the mixer to maintain consistent performance under various loads.

Symptoms of a bad Worm Follower Gear include:

• The mixer making unusual grinding noises,
• The mixer struggling or failing to turn the beaters,
• Excessive vibration or instability during operation.

Causes of worm follower gear failure typically involve heavy or prolonged use, particularly with dense mixtures that exert extra force on the gears, or lack of proper lubrication and maintenance.

This OEM part is also compatible with KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and some Kenmore models.

The Gear Kit is an OEM part for Whirlpool stand mixers. It includes various gears essential for the mixer's drivetrain, which transmits power from the motor to the mixing attachments. These gears are critical for achieving the correct speed and torque necessary for different mixing tasks, from kneading dough to whipping cream. Note: This kit contains the Attachment and Beveled Gears.

Symptoms of a bad Gear Kit include:

• The mixer making grinding or clicking noises during use,
• A noticeable decrease in mixing efficiency or failure to mix at intended speeds,
• The mixer failing to turn on or operate correctly.

Causes of gear kit failure typically involve overloading the mixer beyond its capacity, lack of proper maintenance such as lubrication, or general wear from prolonged use.

This OEM part is also compatible with KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and some Kenmore models.

The Gear Kit is an OEM part for Whirlpool stand mixers. It includes various gears essential for the mixer's drivetrain, which transmits power from the motor to the mixing attachments. These gears are critical for achieving the correct speed and torque necessary for different mixing tasks, from kneading dough to whipping cream. Note: This kit contains the Attachment and Beveled Gears.

Symptoms of a bad Gear Kit include:

• The mixer making grinding or clicking noises during use,
• A noticeable decrease in mixing efficiency or failure to mix at intended speeds,
• The mixer failing to turn on or operate correctly.

Causes of gear kit failure typically involve overloading the mixer beyond its capacity, lack of proper maintenance such as lubrication, or general wear from prolonged use.

This OEM part is also compatible with KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and some Kenmore models.

This 6-32 machine screw is a direct-fit fastener used to secure appliance panels and components. It provides a reliable replacement for stripped or missing screws to restore proper fit and reduce vibration or looseness. What it does:

• Secures panels, brackets, and internal components to keep parts aligned and stable
• Restores proper fastening when original screws are missing, stripped, or damaged
• Helps eliminate rattling or movement caused by loose fasteners
• Compatible with metal-to-threaded-hole connections that use 6-32 hardware

• Use the correct driver and avoid over-tightening to prevent stripped threads or damaged components
• Disconnect power and follow appliance safety guidelines before servicing
• If threads are damaged, replace both screw and any damaged insert or nut as needed

This 8-32 x 5/8 screw replaces missing or damaged hardware specified by the manufacturer to secure panels, brackets, and internal components in your appliance. Restores a tight, rattle-free fit to help prevent vibration and misalignment.

• Provides the correct 8-32 thread and 5/8-inch length where specified
• Secures sheet-metal panels, brackets, and internal assemblies
• Replaces missing, stripped, or corroded screws
• Symptoms include loose or rattling panels, misaligned parts, or hardware that won't stay tight

• Disconnect power; shut off gas before servicing
• Support panels/components while removing or installing hardware
• Start threads by hand to avoid cross-threading; tighten only until snug
• Match the original screw's location and orientation for proper fit

This retaining ring secures components on a drive shaft, keeping gears or assemblies properly seated so the drive operates smoothly. A worn or missing ring can allow unwanted movement, noise, or separation under load.

• Locks into the shaft groove to hold parts in correct axial position
• Helps prevent wobble, slipping, or parts working loose during operation
• Can address symptoms like rattling/grinding noises or a drifting/wobbly shaft
• Visual signs of failure include bending, deformation, or loss of spring tension

• Disconnect power and allow moving parts to stop before servicing
• Wear eye protection—retaining rings can spring free under tension
• Use appropriate retaining ring/snap-ring pliers or controlled leverage to remove/install
• Ensure the ring seats fully in the groove and secure engagement before reassembly

This small flat washer is used as a hardware spacer in Whirlpool appliances. It distributes clamping force and helps maintain proper alignment and smooth movement where a screw, bolt, or pin secures components. Exact placement varies by model.

• Distributes load to protect mating surfaces from damage
• Acts as a spacer/shim to set correct clearance
• Helps reduce friction and metal-to-metal noise
• Common symptoms of a worn or missing washer: loose or misaligned parts, scraping/squeaking, or difficulty keeping a fastener tight

• Disconnect power and shut off water supply before servicing
• Support the assembly and note the original washer order and placement during disassembly
• Reinstall the washer in the same position/orientation as the original
• Tighten hardware snugly; do not overtighten to avoid deforming the washer

This screw secures appliance panels, brackets, and trim so everything stays aligned and rattle-free. Replace missing, stripped, or rusted hardware to restore a solid fit and dependable operation. What it does:

• Fastens components to the cabinet/frame to maintain proper alignment
• Helps prevent vibration, rattling, and small gaps from loose hardware
• Replaces lost, damaged, or corroded screws to restore secure mounting
• Common signs include loose panels/trim, vibration noises, or shifting parts

• 1 screw

• Disconnect power; shut off gas/water if applicable before servicing
• Support the part being fastened to keep holes aligned and avoid damage
• Start threads by hand to prevent cross-threading; realign if resistance is high
• Tighten snugly—do not overtighten to avoid stripping threads or cracking plastic

The Rear Sleeve Bearing is an OEM part for Whirlpool mixers. This component provides critical support for the mixer's motor shaft, allowing it to rotate smoothly and efficiently. By reducing friction and wear, the rear sleeve bearing ensures that the mixer operates quietly and reliably, extending the lifespan of the motor and other moving parts.

You should replace the rear sleeve bearing if it becomes worn or damaged. Causes of a bad rear sleeve bearing can include regular wear and tear from frequent use, lack of lubrication, or the accumulation of debris. Over time, these factors can lead to increased friction, noise, and potential motor damage.

Symptoms of a bad rear sleeve bearing include:

• Unusual noises such as squeaking or grinding during mixer operation
• The mixer shaft not rotating smoothly or becoming difficult to turn
• Increased vibration or wobbling of the mixer attachment
• Excessive wear or damage to the motor shaft

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The  Front Sleeve Bearing is an OEM part for Whirlpool stand mixers. It serves as the front worm gear bearing. It is designed to support the rotating shaft within the mixer, ensuring smooth and efficient operation of the mixing attachments.

Over time, the front sleeve bearing can wear out or become damaged due to heavy use, lack of lubrication, or exposure to moisture. When this occurs, the bearing may fail to provide adequate support, leading to potential damage to the mixer's internal components.

Symptoms of a bad front sleeve bearing include:

• Unusual noises such as grinding or squeaking during operation
• Increased vibration or wobbling of the mixing attachments
• Difficulty in achieving smooth and consistent mixing

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

Note: For the rear sleeve bearing, order WPW10170081.

The Worm Gear Thrust Bearing is an OEM part for Whirlpool stand mixers. This component is integral to the mixer's drive system, helping to reduce friction and ensure smooth rotation of the worm gear. It supports the gear mechanism, allowing for efficient and consistent mixing performance.

Causes of a bad worm gear thrust bearing can include regular wear and tear, overloading the mixer, or exposure to heavy-duty mixing tasks that place excessive strain on the component. A damaged thrust bearing can impede the mixer’s operation and lead to mechanical issues.

Symptoms of a bad worm gear thrust bearing include:

• Unusual noises, such as grinding or squealing, during operation
• The mixer struggling or failing to mix ingredients smoothly
• Visible wear or damage to the bearing
• The mixer motor overheating or experiencing increased resistance

This OEM part is also compatible with KitchenAid models.

The Center Shaft O-Ring is an OEM part for Whirlpool mixers. This small but crucial component provides a watertight seal around the center shaft, preventing liquids and ingredients from leaking out of the mixer during operation. It helps ensure the smooth and efficient performance of the mixer by maintaining a proper seal.

Over time, the center shaft O-ring can become worn, cracked, or damaged due to regular use, exposure to various mixing ingredients, and the constant motion of the mixer. When the O-ring is compromised, it can lead to leaks and reduced mixing efficiency.

Symptoms of a bad center shaft O-ring include:

• Leaking of liquids or ingredients from the mixer
• Reduced mixing efficiency or performance
• Visible wear, cracks, or damage to the O-ring
• Difficulty in achieving a proper seal during use

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Transmission Housing is an OEM part for Whirlpool mixers. This component encases the transmission, which is responsible for transferring power from the motor to the mixing attachments. The housing ensures the transmission is protected from external damage and maintains the alignment and stability of internal components.

Over time, the transmission housing can become compromised due to regular use, exposure to food and moisture, or accidental impacts. Damage to this part can lead to misalignment, which affects the performance of the mixer.

Symptoms of a bad transmission housing include:

• Unusual noises during operation
• Mixing attachments not spinning properly
• Visible cracks or damage to the housing
• Leaking grease from the transmission area

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

The Motor Shaft Seal is an OEM component for Whirlpool stand mixers. It is a mechanical component that forms a perimeter around the motor shaft opening, protecting internal parts from debris intrusion. Maintaining an airtight seal prevents contaminants from disrupting operations.

Symptoms of a damaged motor shaft seal include:

• Flour, wet ingredients, or dust leakage at the motor housing connection  
• Premature motor failure due to abrasive particle penetration
• Grinding or scraping noises emanating from the shaft area during use
• Reduced mixing power and inability to smoothly knead doughs

Causes usually relate to typical wear over long-term, repeated use of the mixer. Constant rotational motion against the sealing material results in damage like cracking or splits compromising its integrity.

This OEM Whirlpool replacement restores protective shielding for the motor. Compatible brands are KitchenAid, Sunbeam, Hamilton Beach, and some Kenmore stand mixers.

The Gear is an OEM replacement part for Whirlpool stand mixers. Located inside the mixer head assembly, it transfers torque from the motor into rotary spinning of mixing attachments. Thorough blending and kneading depend on dependable gear movement.

Causes of gear failure include wear from extended use breaking down teeth, accumulated residue gumming up meshing parts, or impacts damaging vital cogs.

Symptoms include:

• Attachments failing to spin or rotating unevenly
• Grating sounds emanating from within the mixer
• Ingredients not fully incorporated as intended

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper and some Kenmore models.

This small grooved pin is a precision retaining fastener used to secure and align mating parts within an appliance assembly. Replacing a worn or missing pin restores proper support and helps the mechanism operate smoothly and quietly. What it does:

• Locks two components together with an interference-fit groove to prevent unwanted movement
• Maintains alignment of hinges, linkages, or levers in the assembly
• Reduces wobble, vibration, and rattling that can occur when a pin is worn or missing
• Common symptoms include loose or drifting parts, misalignment, intermittent operation, or unusual noises

• 1 grooved pin

• Disconnect power and, if applicable, shut off water/gas before servicing
• Support the assembly; remove any retainers, then drive out the old pin with a small punch/drift and install the new pin aligned to the original orientation
• Do not reuse damaged hardware; replace worn bushings or clips and ensure smooth movement
• Test operation before reassembling covers and restoring power