Parts for Kitchenaid 5KSM150PSEEB4: 02 - Case, Gearing And Planetary Unit Parts

The Hub Cap is an OEM replacement part is for Whirlpool stand mixers. The cap hub is a small part at the top of your mixer which you remove when adding an attachment such as the pastamaker. To replace this part, simply unscrew the knob to the right of the cap, and remove and replace the cap.

Causes of a bad hub cap can include cracks or punctures developing over extended use periods. Excessive downward force on heavy mixing attachments may also damage the cap over time.

Symptoms of a bad hub cap include:

• Fluids leaking into the base or motor areas during mixing
• Moisture or messes within the stand mixer body
• Inability to maintain suction or vacuum when using attachments

This is a genuine Whirlpool OEM replacement this part is also compatible with Maytag, Jenn-Air and some Kenmore models.

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.

This spacer washer helps set and maintain the correct spacing between mating components. It cushions contact points to reduce wear, noise, and misalignment for smoother, longer-lasting operation.

• Maintains accurate spacing between parts for proper alignment
• Helps reduce friction and metal-to-metal wear
• Can quiet rubbing or squeaking from misaligned components
• Useful when play or uneven gap causes intermittent performance issues

• Disconnect power and, if applicable, shut off gas before servicing
• Note the original washer's location and orientation for reassembly
• Inspect mating surfaces for wear or debris and clean before installation
• Do not force parts together; verify proper fit and stack-up thickness

The Worm Gear is an OEM part for Whirlpool mixers. This part drives the rotation of the planetary assembly. The planetary assembly is where the mixer's accessories attach.

You should replace the worm gear if it becomes worn out or damaged. Causes of a bad worm gear can include excessive strain from heavy or dense mixing tasks, lack of lubrication, or general wear and tear over time. 

Symptoms of a bad worm gear include:

• The mixer attachments not turning
• Grinding or clicking noises during operation
• The mixer motor running but the attachments remaining stationary

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

This bearing supports a rotating shaft or assembly inside the appliance, reducing friction for smooth, quiet operation. Replacing a worn bearing restores proper alignment and helps prevent noise and premature wear on connected parts.

• Provides a low-friction surface for smooth rotation
• Helps keep the rotating component centered and stable
• Reduces vibration and operating noise
• Common failure signs: grinding/squealing, wobble or play, rough or intermittent rotation

• Disconnect power; also shut off water or gas supply if applicable
• Access the assembly per your model's service information and note part orientation before removal
• Inspect the shaft/hub and any spacers or seals for wear; replace related worn components
• Seat the bearing squarely—do not force; apply only manufacturer-specified lubricant if called for in service literature

The Retaining Pin is an OEM part for Whirlpool stand mixers. It secures various components within the mixer, such as the beater shaft or attachments, ensuring they remain firmly in place during operation.  

Common causes of a faulty retaining pin include wear and tear from regular use, accidental impacts, or stress from overloading the mixer.

Symptoms of a bad retaining pin include:

• Attachments or components becoming loose or falling out during use
• Difficulty in attaching or removing mixer components
• Visible bending, damage, or wear on the pin
• Unusual noises or vibrations during mixer operation

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

This shaft-and-pinion assembly uses a 10-tooth pinion to transfer drive through the geartrain. Replacing a worn or stripped unit restores proper gear mesh and smooth, reliable power to the driven components.

• Transfers motor rotation through the geartrain via a 10-tooth pinion on a precision shaft
• Maintains correct gear engagement and alignment to minimize noise and wear
• Typical symptoms: grinding/clicking from the gearcase, output not turning or slipping under load, intermittent drive, or visibly rounded/broken teeth
• Can also reduce wobble or excessive play at the driven shaft

• Disconnect power before servicing; wear cut-resistant gloves and eye protection
• Access the drive/gearcase, note gear order and orientation (take photos for reference)
• Inspect mating gears and bushings; clean debris and replace any worn parts
• Apply manufacturer-specified grease to the gear teeth/bearings and confirm smooth rotation by hand before reassembly

The Mixer Hub Gear Kit is an OEM part for Whirlpool mixers. This kit includes the gears necessary to transfer motor power to the mixing attachments, ensuring efficient and consistent mixing performance.

Causes of a bad mixer hub gear kit can include wear and tear from frequent use, overloading the mixer with heavy ingredients, and lack of proper maintenance or lubrication. Over time, gears can wear down, crack, or break, leading to decreased performance or complete failure.

Symptoms of a bad mixer hub gear kit include:

• Mixer attachments not turning or moving inconsistently
• Grinding or unusual noises during operation
• Reduced mixing power or performance
• Mixer not operating at all

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

The Mixer Hub Gear Kit is an OEM part for Whirlpool mixers. This kit includes the gears necessary to transfer motor power to the mixing attachments, ensuring efficient and consistent mixing performance.

Causes of a bad mixer hub gear kit can include wear and tear from frequent use, overloading the mixer with heavy ingredients, and lack of proper maintenance or lubrication. Over time, gears can wear down, crack, or break, leading to decreased performance or complete failure.

Symptoms of a bad mixer hub gear kit include:

• Mixer attachments not turning or moving inconsistently
• Grinding or unusual noises during operation
• Reduced mixing power or performance
• Mixer not operating at all

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

This vertical center shaft aligns and drives the rotating components in the refrigerator's ice dispenser/crusher assembly, helping cubes and crushed ice dispense smoothly. Replacing a worn or stripped shaft restores reliable dispensing performance.

• Centers and supports the crusher/dispenser components for smooth operation
• Transfers drive from the dispenser motor through the crushing mechanism
• Helps prevent jams and binding caused by misalignment or wear
• Common symptoms: ice not dispensing, no crush function, grinding/clicking noises, wobbling shaft or visible wear

• Unplug the refrigerator before servicing; handle sharp crusher blades with cut-resistant gloves
• Remove the ice bin and disassemble the crusher housing on a flat work surface
• Note the order of blades, spacers, washers, and any clips; transfer them to the new shaft in the same sequence
• Reinstall the bin, ensure the drive coupling engages fully, restore power, and test dispensing

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 Groove Pin is an OEM replacment part for Whirlpool stand mixers. Located internally on the planetary beater hub, this cylindrical pin engages a circumferential groove to deliver precise beater movements at varying speeds.

Causes relate to wear from continuous rotating motions, cracking under heavy load pressures, or loosening over extended use. Mineral buildup may also impede smooth functioning.

Symptoms of a problematic groove pin include:

• Whirring noises and vibrations heard during kneading or mixing
• Uneven blending of ingredients around the mixing bowl
• Potential damage to other internal components from pin mobility

This is a genuine Whirlpool OEM replacement this part is also compatible with Maytag, Jenn-Air and some Kenmore 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 Washer is an OEM replacement part for Kitchenaid stand mixers. This washer serves a dual purpose as both a spacer and a cushion, positioned on the Vertical Center Shaft beneath the Bevel Pinion and Center Gear and above the planetary gear assembly.

Replacement of this washer should be considered if it becomes torn, damaged, or lost to maintain the mixer's performance and prevent potential damage to other components. It is recommended that two washers be used in every mixer to ensure optimal performance and stability of the internal gearing system.

Symptoms of a washer needing replacement include:

• Increased operational noise or grinding sounds
• Excessive vibration or instability during use
• Visible wear or damage to the washer itself

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

Note: Shaft has been revised by the factory and the spring is no longer used.

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 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

This 6-32 machine screw fastens brackets, panels, and internal components in your appliance. Replacing a missing or stripped screw restores a secure, rattle-free fit and keeps assemblies properly aligned during normal operation.

• Secures components to frames, brackets, or covers
• Helps maintain proper alignment of panels and hardware
• Replaces missing, damaged, or stripped fasteners
• Common signs: loose/rattling panels, misaligned parts, or a screw that won't tighten

• Disconnect power (and water, if applicable) before servicing
• Match thread and length to the original fastener; reuse any washers if present
• Start threads by hand to avoid cross-threading; tighten snugly without overtightening
• Use the driver that matches the head style on your original screw

• Thread size: 6-32 (machine screw)

Size: 6-32 x 9/32 inch.

The Worm Gear and Bracket Assembly is an OEM part for Whirlpool appliances, specifically designed for use in certain models of stand mixers. This assembly is responsible for transferring the motor's power to the mixing attachments, ensuring smooth and efficient operation. The worm gear works in conjunction with other gears to reduce the motor's speed while increasing torque, allowing the mixer to handle heavy doughs and batters.

You should replace the worm gear and bracket assembly if it becomes faulty. Causes of a bad worm gear and bracket assembly can include wear and tear from regular use, overloading the mixer with heavy ingredients, or lack of proper maintenance. A malfunctioning worm gear can lead to issues with the mixer's performance and efficiency.

Symptoms of a bad worm gear and bracket assembly include:

• The mixer attachments not turning or moving irregularly
• Unusual noises such as grinding or clicking during operation
• The mixer motor running but the attachments not moving
•  Reduced power or inconsistent mixing performance

This OEM part ensures your stand mixer operates at peak performance, handling all your mixing needs with ease. The assembly is also compatible with some models from KitchenAid, Jenn-Air, and other brands under the Whirlpool umbrella.

Notes: 10 and 23 teeth. For worm gear only order WPW10112253. For grease order 4176597.

The Center Shaft Kit is an OEM part for Whirlpool stand mixers. This kit includes the center shaft and necessary components to ensure the proper operation and rotation of the mixer's beaters or attachments.

Causes of a bad center shaft can include wear and tear from regular use, corrosion due to exposure to ingredients and cleaning agents, or physical damage from overloading or mishandling the mixer.

Symptoms of a bad center shaft kit include:

• The beaters or attachments not rotating properly
• Unusual noises during operation
• The mixer shaking or vibrating excessively
• Difficulty in attaching or removing beaters or attachments

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

This helical spring lock washer secures machine screws and bolts in your appliance, maintaining clamping force under vibration and thermal cycling. Use it to keep fasteners tight and assemblies stable for reliable operation.

• Provides spring tension to resist loosening from vibration and movement
• Helps maintain secure mounting and alignment of brackets, motors, and panels
• Common symptoms of a missing or fatigued washer: screws backing out, rattling/vibration noises, or a loose fit after tightening

• Unplug the appliance; shut off water supply if applicable
• Install between the fastener head (or nut) and the mating surface
• Use a matching screw size; replace any stripped or corroded hardware
• Tighten snugly without over-tightening

This headless, cup-point set screw secures a component to a shaft or hub inside your appliance. The 1/4-28 x 3/8 in size bites into the mating surface to prevent slipping, helping keep collars, pulleys, or knobs aligned and stable.

• Locks a hub, collar, or pulley to a shaft to prevent movement
• Helps maintain alignment and reduce wobble or vibration
• Replaces missing, stripped, or damaged set screws
• Common signs include components slipping on a shaft, rattling noises, or recurring loosening

• Disconnect power before servicing
• Clean threads and align with any flat on the shaft before tightening
• Start threads by hand to avoid cross-threading; tighten securely without overtightening
• Recheck tightness after a brief test run

This small drive gear transfers motor power to the rest of the gear train. Replacing a worn or stripped pinion restores smooth, consistent rotation and helps prevent additional damage to neighboring gears and shafts. What it does:

• Engages the mating gear to transmit torque from the motor
• Drives the output gear train for consistent movement
• Maintains proper gear mesh inside the drive housing
• Typical failure signs: grinding/clicking, slipping under load, or no movement of driven parts

• 1 pinion gear

• Disconnect power before servicing; allow all moving parts to stop
• Access the gearcase/drive housing and note the original gear's orientation
• Inspect mating gears; replace as needed and use manufacturer-approved grease if required
• Hand-rotate the assembly to verify smooth operation before reassembly and test

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.

A polished drip ring that fits under a cooktop burner to catch spills and keep the cooktop surface cleaner. Restores the finished look around the burner and helps direct crumbs and liquids away from internal components. What it does:

• Replaces a worn, dented, or discolored drip ring to improve appearance and containment of spills
• Helps channel crumbs and small spills away from burner mounting areas
• Prevents direct contact between spills and the cooktop frame or internal parts
• Can reduce the effort needed to clean around burners by providing a removable catcher

• One polished drip ring

• Ensure the appliance is cool and burners are off before servicing
• Remove the old ring by lifting it away from the burner assembly; seat the new ring in the same position
• Handle carefully to avoid scratching the polished surface; clean with mild detergent and a soft cloth

This factory fastener secures appliance components and panels in their intended positions. Replacing a missing, stripped, or corroded screw restores a tight fit, helping maintain alignment and reduce looseness and vibration-related noise.

• Fastens brackets, covers, and internal parts to the cabinet or frame
• Replace if the head is rounded, threads are worn, corroded, or the screw is missing
• Helps address rattling, buzzing, or wobbling caused by loose hardware
• Supports proper alignment of panels and assemblies

• Disconnect power and, if applicable, shut off water before servicing
• Use the correct driver size/type to prevent stripping the head
• Start threads by hand to avoid cross-threading; do not overtighten (especially into plastic)
• Replace one-for-one in the original location and orientation

This genuine replacement gear is a drivetrain component that transfers motor rotation to a mating mechanism inside your appliance. Replacing a worn or stripped gear restores smooth, reliable motion and helps prevent damage to adjacent parts.

• Meshes with adjacent gear(s) or a shaft to drive an internal mechanism
• Worn or rounded teeth can cause slipping, skipping, or no movement
• Intermittent or stalled movement can indicate a stripped or damaged gear

• Disconnect power (and shut off water/gas if applicable) before servicing
• Access the assembly; note orientation and timing marks
• Transfer any spacers, keys, or retaining clips from the old gear
• Seat the new gear fully and verify smooth manual rotation before restoring power

This refrigerator water filter replaces your fridge's internal filtration cartridge to help restore clear, better-tasting drinking water and ice. Simple to swap, it helps maintain household water quality when performance declines. What it does:

• Traps sediment and particulates to improve water clarity
• Reduces chlorine taste and odor for fresher-tasting water and ice
• Helps prevent scale and particulates from reaching dispenser and ice maker
• Common symptoms: cloudy or bad-tasting water, off-odors, or reduced water flow from dispenser

• Turn off the water supply and follow the refrigerator manufacturer's removal instructions before replacing the filter.
• Push/turn or slide new filter into the filter housing until it seats; follow OEM instructions for your model.
• After installation, flush several quarts of water through the dispenser to clear air and any loose carbon residue.
• Replace at recommended intervals and discard used filters per local regulations; do not use with water that is microbiologically unsafe without adequate disinfection.

Size: 10-24X5/16-NI