Mdb324039gx Parts

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

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

Replacement 8-32-thread screw used to secure panels, brackets and small components in compatible household appliances. Restores missing or stripped fasteners so panels and parts stay firmly attached during normal use. What it does:

• Secures trim, panels, brackets and control housings to maintain proper assembly.
• Replaces missing or damaged screws that can cause rattling, loose panels or misaligned components.
• Fits locations that require an 8-32 threaded fastener; correct length and head style for your application.
• Helps restore stable, vibration-free operation when worn or stripped fasteners are replaced.

• Disconnect power and water before servicing; wear eye protection and gloves.
• Use the correct screwdriver or driver bit to avoid stripping the screw head.
• Do not overtighten—turn until snug and secure to avoid damaging threads or surrounding parts.
• If the original used a washer or nut, reuse or replace as needed and the screw length and head type match the original.

Screw: 8-16 x 3/8 inch.

This replacement screw secures appliance panels, brackets, and components. Using the correct size restores a snug fit to reduce vibration, prevent loosening, and keep assemblies properly aligned during operation. What it does:

• Fastens sheet metal and component brackets in designated locations
• Replaces missing, stripped, or corroded hardware
• Helps eliminate rattling and vibration from loose panels
• Maintains proper alignment of covers and assemblies

• 1 screw

• Disconnect electrical power; shut off water or gas supplies if applicable
• Match length/thread to the original; replace one fastener at a time to preserve alignment
• Start by hand to avoid cross-threading; use the correct driver size
• Snug firmly but do not overtighten to prevent stripping

This tower protector is a small plastic cover that fits over the dishwasher's spray tower. It helps keep dishes and utensils from obstructing the tower's spray outlets so water can circulate properly for consistent cleaning.

• Shields the spray tower to prevent items from blocking water flow
• Helps maintain proper spray pressure and coverage to upper areas
• Replaces cracked, melted, or missing protectors that can lead to poor cleaning
• Common signs it's needed: protector is broken/loose, deformed, or repeatedly falls off; dishes aren't getting clean due to blocked spray

• Disconnect power and water before service
• Allow the dishwasher interior to cool
• Open the door, remove the lower rack, and snap the protector into place per the tower/rack design
• Verify it seats securely and does not interfere with the spray tower movement

Color: Black. Size: 12 oz. Acrylic appliance aerosol can spray paint.

Size: 8-18 x 1/2 inch.

Specs: No.8X1/2 HEX WASHER HEAD

This grate captures heavy soils and debris at the bottom of the washer tub to help reduce re-deposition on clothing and keep the drain area clearer. Restores proper soil separation for more consistent wash results. What it does:

• Traps heavy dirt and debris so it doesn't recirculate onto clothes during the wash.
• Helps keep the drain/under-tub area clearer, reducing the chance of clogs.
• Supports proper water flow and soil separation for improved cleaning performance.
• Common symptoms indicating a failing or missing part: clothes still look soiled after a cycle, visible debris in the tub, or frequent drain blockages.

• One grate

• Disconnect power and shut off water before servicing the washer.
• Drain the tub and remove any agitator or tub components required for access.
• Use basic hand tools; avoid forcing parts or over-tightening plastic components.

This wet agent dispenser replaces the washer's liquid fabric softener dispenser to restore proper dispensing during the rinse cycle. It helps keep softener contained until the machine is ready to release it, improving rinse-time performance. What it does:

• Holds and releases liquid fabric softener (wet agent) into the rinse cycle
• Ensures softener is delivered at the correct time for even distribution
• Stops leaking or premature release when the dispenser housing is intact
• Commonly replaced when the dispenser cracks, clogs, or fails to dispense

• Disconnect power to the appliance before starting any repairs
• Access method varies by model; remove dispenser drawer or top panel per your model's service instructions
• Inspect surrounding seals and clips; replace if damaged to prevent leaks

Seal head assembly replaces the seal around the dishwasher pump motor shaft to stop leaks and protect the motor. It restores a watertight seal so the dishwasher drains safely and avoids cabinet water damage. What it does:

• Seals the pump motor shaft to prevent water from leaking into the motor and cabinet.
• Helps stop under-dishwasher puddling, external leaks, and moisture-related motor issues when the original seal fails.
• Restores proper drainage path by maintaining the seal between the pump and housing.
• Compatible with service procedures that replace the pump seal as directed by OEM diagrams.

• Disconnect power and turn off the water supply before servicing.
• Drain the dishwasher and remove access panels to reach the pump; handle the seal carefully to avoid damage.
• Inspect surrounding gaskets and pump housing for wear; replace any damaged components to ensure a proper seal.
• After installation, run a short cycle and check thoroughly for leaks before returning the dishwasher to regular use.

Color: Gray

Float that detects and communicates water level to the appliance control so the washer or dishwasher can fill and drain properly. Replaces a cracked, stuck, or worn float to restore reliable water sensing. What it does:

• Senses water level and relays position to the machine's control system.
• Helps prevent overfilling or unintended continuous filling when working correctly.
• Can resolve symptoms such as flooding, constant filling, no fill, or improper drain cycles.
• Works with the appliance's existing valve and switch components to re-establish normal fill/drain operation.

• Disconnect power (and water supply where applicable) before beginning service.
• Remove outer panels or tub shroud to access the float; use basic hand tools.
• Handle clips and fittings gently; do not force plastic tabs or connectors during removal/installation.
• After installation, restore power and run a test cycle to ensure correct fill and drain behavior.

The Lower Washarm is an OEM replacement part for Whirlpool dishwashers. Positioned at the bottom of the dishwasher tub, it rotates during the wash cycle, distributing water and detergent evenly across the lower rack. 

Over time, wash arms can become clogged with food debris or mineral deposits, reducing water flow. Physical damage such as cracks or warping can also impede the wash arm's rotation and affect its cleaning performance.

Color: Gray

Symptoms of a faulty lower wash arm include:

• Inadequate cleaning of dishes on the lower rack
• Uneven or inconsistent water spray
• Clogged or obstructed spray nozzles
• The arm not spinning or rotating correctly

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

This tub wheel mounts on the dishwasher's tub wall to guide and support the rack as it slides in and out. Replacing a worn wheel restores smooth rack movement and helps prevent binding, noise, and derailments.

• Mounts to the tub to provide rolling support for the dish rack/rail
• Replaces cracked, flattened, or missing wheels that impede rack travel
• Helps fix racks that stick, bind, are hard to pull/push, or derail
• Reduces grinding or squeaking from the rack area

• Disconnect power at the breaker before servicing
• Open the door and pull the rack forward for access
• Release the old wheel from its retainer/axle per your model's design; install the new wheel in the same orientation
• Ensure the wheel spins freely and the rack slides smoothly before use