Mdb4050 Parts

This wax motor is the actuator for the dishwasher's rinse aid dispenser, releasing rinse agent at the correct time in the cycle. Replacing a weak or failed unit restores consistent rinse aid dispensing and helps minimize spotting.

• Actuates the rinse aid dispenser by extending a plunger when energized
• Works with the control to meter rinse aid during the final rinse
• Failure symptoms can include rinse aid not dispensing, the level never dropping, and increased spotting/filming on dishes
• Dispenser may remain closed with no audible actuation during the cycle

• Disconnect power at the breaker and shut off water before servicing
• Remove the door panel to access the dispenser; label and disconnect wires
• Release the old motor and install the new one in the same orientation, ensuring it seats fully
• Run a test cycle to ensure the dispenser releases rinse aid

This hose clamp secures a hose connection to prevent leaks and keep your appliance running smoothly. It provides a tight, reliable hold on the hose fitting so water or air stays contained during operation.

• Tightens around a hose and fitting to maintain a secure seal
• Helps stop drips, seepage, or loose connections
• Common fix when you see moisture around a hose joint
• Useful if a clamp is rusted, stretched, or no longer holding tension

• Unplug power and shut off water (if applicable) before servicing
• Note clamp position/orientation before removal
• Use appropriate screwdriver or nut driver to tighten evenly
• Do not overtighten—ensure a snug, leak-free seal without damaging the hose

This replacement door handle restores a secure grip and normal door operation on compatible Whirlpool appliances. It provides a like-for-like fit and finish to replace a damaged, loose, or worn handle so doors open and close reliably. What it does:

• Replaces a broken, cracked, or missing door handle to restore normal use
• Provides a solid grip so the door opens and closes smoothly
• Matches the original mounting points for straightforward fit
• Helps eliminate rattling or loose-handle symptoms

• One replacement handle

• Intended to be installed with the original mounting screws and hardware; only included items ship
• Turn off and unplug the appliance or shut off power at the breaker before servicing electrical appliances
• Use moderate force when aligning the handle to avoid damaging trim or fasteners

This float palnut is a push-on retainer that secures the dishwasher's water-level float to its stem. Keeping the float anchored helps the overfill protection work properly, supporting correct fill levels and helping prevent leaks from overfilling. What it does:

• Holds the float in position so it can move freely with water level changes
• Helps the float reliably actuate the overfill/float switch
• Replace if cracked, loose, or missing
• Typical symptoms include a loose or wobbly float, the float popping off, erratic filling, overfilling, or leaks near the float area

• One float palnut

• Disconnect power and turn off water supply before servicing
• Remove the lower rack to access the float assembly
• Remove the old retainer; press the new palnut squarely onto the float stem until snug
• The float moves freely up and down before reassembling

Attaches to the inner tub for the upper rack

This is the longer of the two dispenser lid hinge pins. For the shorter lid hinge pin order WPY912679.

This power cord strain relief secures the cord where it passes through the appliance cabinet, protecting the jacket and preventing pull on internal connections. Replacing a cracked or missing connector restores a safe, stable cord entry. What it does:

• Secures the power cord at the cabinet entry to relieve strain on internal terminals or junction connections
• Provides a protective bushing to reduce abrasion of the cord jacket against cabinet edges
• Helps maintain proper routing and support for the incoming power cord
• Typical signs it's needed: loose or wobbly cord at entry, broken/missing connector, or visible chafing on the cord jacket

• 1 strain relief connector

• Disconnect power at the breaker or unplug the appliance before servicing
• Remove the access cover, release and remove the old strain relief, and route the cord through the new connector
• Seat the connector fully so it captures the cord's outer jacket—not the individual conductors
• After reassembly, verify the cord is secure and does not move at the entry point

This is the shorter of the two dispenser lid hinge pins. For the longer lid hinge pin order WP6-912678.

Long tub insulation that fits the appliance's inner tub, reducing operating noise and helping stabilize temperature around the tub for quieter, more consistent performance. Replaces worn or damaged insulation to address rattles and drafts. What it does:

• Dampens noise and vibration when insulation is torn, compressed or missing.
• Helps limit heat loss and reduce cold spots that can cause condensation or longer warm-up times.
• Reduces rattling or knocking caused by loose or degraded insulation.
• Intended for specific Whirlpool tubs—verify model fit before ordering.

• Disconnect power (and water supply for washers) before starting any repair.
• Remove outer panels or drum components per the service manual; insulation may be held with clips, adhesive, or fasteners.
• Wear gloves and a dust mask—insulation fibers can irritate skin and lungs.

To order indicator lens use WP22001948.

Dishwasher rack rear bowl tine. For the front tine order 12002218. For the tine clip order WPY912709.

Used on the ends of the tines inside the dishwasher rack.

This O-ring seal fits into a groove to create a tight, leak-resistant barrier where two parts join. Replacing a worn O-ring helps stop drips at connections and keeps your appliance running reliably. What it does:

• Forms a compressible seal between mating parts (fittings, housings, or tubing)
• Helps prevent water or fluid leaks at joints
• Maintains proper pressure and flow within the sealed path
• Replace if you see seepage at the connection or the ring is cracked, flattened, brittle, or swollen

• 1 O-ring seal

• Disconnect power and shut off water supply before servicing
• Clean the groove and mating surfaces; remove debris that could compromise the seal
• Lightly lubricate with manufacturer-approved silicone grease; avoid petroleum-based products
• Seat the O-ring without twisting; reassemble carefully and check for leaks after testing

This small rubber grommet seals the opening around the dishwasher's detergent/rinse-aid dispenser, helping prevent leaks and moisture intrusion so the dispenser operates reliably throughout the wash cycle.

• Seals the dispenser passage to keep water from leaking into or out of the dispenser cavity
• Helps ensure proper detergent or rinse-aid dispensing
• Can reduce moisture-related corrosion or staining in the dispenser area

• Disconnect power and turn off water before servicing
• Remove inner door panel to access the dispenser assembly
• Note grommet orientation; seat fully to ensure a watertight seal
• Inspect surrounding surfaces for debris or damage before reassembly

The Tub Wheel supports and guides the washer's tub assembly on its base during wash and spin cycles. Replacing a worn wheel restores smoother, quieter operation and helps reduce vibration and rubbing as the machine operates.

• Provides rolling support so the tub can move and self-balance during cycles
• Reduces friction between the tub and the base/frame
• Helps keep the tub centered to minimize noise and vibration
• Failure symptoms include squeaking or grinding, scraping noises, dragging movement, or visible flat spots/cracks on the wheel

• Disconnect power and water supply before servicing; wear appropriate gloves and eye protection
• Access the base/suspension per the service information and support the tub to remove load from the wheel
• Remove the retainer/axle, install the new wheel, and free rotation and correct orientation
• Reassemble, level the appliance, and run a spin test to check for noise and balance

Screw: 8-16 x 3/8 inch.