Dwhd640jpr/74 Parts

This water softener cartridge helps reduce hard-water minerals in dishwasher cycles to limit spotting and buildup for clearer glassware and cleaner dishes. Fits into the dishwasher's water-treatment area to help maintain wash performance. What it does:

• Uses ion-exchange media to reduce hardness that causes spotting and cloudy glass
• Helps prevent mineral deposits on heating elements and interior surfaces
• Improves detergent effectiveness for better cleaning and rinsing
• Common symptom: persistent spots or white film on dishes and glasses

• High-level replacement: disconnect power and water supply before servicing
• Access requires removing the dishwasher's outer tub/top panels per service manual
• Handle cartridge and internal parts carefully to avoid damaging seals or gaskets

This temperature sensor (thermistor) measures appliance temperature and sends a signal to the control board so the unit can maintain proper cooling cycles. Replaces a failed or intermittent sensor for more reliable temperature control. What it does:

• Detects internal temperature and provides a changing resistance signal to the control board
• Helps the control board regulate compressor and fan operation for consistent cooling
• Commonly linked to symptoms like incorrect temperatures, frequent cycling, or related error codes
• Works as a direct-replacement sensing element

• One temperature sensor (thermistor) as pictured

• Disconnect power before servicing to avoid shock or damage
• Handle the sensor and wiring gently; avoid kinking or pinching the harness
• Access may require removing interior panels or covers; keep mounting hardware for reinstallation
• Test with a multimeter or follow OEM service instructions before replacement

This retaining nut secures threaded connections on compatible Bosch appliances to keep components tight and stable during operation. A small replacement that restores proper fastening and prevents parts from loosening. What it does:

• Fastens and secures mating threaded components to maintain mechanical stability
• Prevents vibration-induced loosening of attached parts
• Helps maintain proper alignment of secured components during use
• Can stop intermittent movement or rattling caused by a missing or damaged nut

• Turn off and unplug the appliance before servicing to avoid shock or injury
• Verify correct nut location and thread engagement before tightening; do not force threads
• Tighten to snug fit—avoid overtightening which can strip threads or damage components

This shaped handle cap covers and finishes the end of an appliance door or handle for a clean, finished appearance and to protect the handle end from damage. It restores the original look and helps keep dirt out of the handle cavity. What it does:

• Covers the exposed end of a door or drawer handle for a finished appearance
• Protects the handle end from chips, scratches, and grime
• Helps stop drafts or moisture intrusion into handle cavities
• Replaces missing, cracked, or broken handle end caps

• Typically snaps or slides into place; a small flat screwdriver or trim tool may help with removal/installation
• Work carefully to avoid scratching surrounding surfaces
• If the handle or surrounding trim must be removed, follow the appliance manufacturer's disassembly instructions first
• For appliances with electrical components near the handle, disconnect power before servicing

This replacement rail restores smooth rack movement and proper alignment in compatible dishwashers. It helps support the rack and keep rollers on track so the rack slides in and out without binding. What it does

• Supports and guides a dishwasher rack so it rolls smoothly along its track
• Helps prevent the rack from slipping off or catching while opening or closing
• Can reduce grinding or scraping noises caused by a damaged or bent rail
• Restores proper rack alignment for reliable loading and unloading

• One rail

• Turn off power to the appliance before beginning any service
• Remove the affected rack and rollers as needed to access and replace the rail
• Inspect rollers and mounting clips; replace any worn hardware to ensure proper fit

This genuine bearing supports smooth, low-friction rotation of a moving component inside your appliance. Replacing a worn bearing restores quiet, consistent operation and helps protect the shaft and housing from accelerated wear.

• Provides radial support and alignment for a rotating shaft or arm
• Reduces friction to improve efficiency and minimize noise
• Helps prevent wobble and uneven wear on mating parts
• Typical signs of wear: grinding/squealing sounds, rough or seized rotation, excessive play

• Disconnect power and water supply and allow hot components to cool
• Access the assembly; note the original bearing's orientation and depth
• Inspect the shaft and housing; replace if grooved, bent, or heat-damaged
• Press the new bearing in squarely; avoid striking the inner/outer race and verify free rotation before reassembly

This is the appliance's main power on/off switch. It restores reliable control of electrical power to the unit so you can turn it on and off consistently.

• Controls AC power to the appliance's user interface and electronics
• Worn or stuck switch can cause no power, intermittent power, or inability to shut off
• Spongy or loose button feel may indicate internal switch failure

• Disconnect power before service to avoid electrical shock
• Access typically requires removing the control panel or console
• Note wire positions or take a photo before disconnecting
• Do not force tabs; transfer any clips or boots from the old switch if present

This suspension damper stabilizes the tub/drum by absorbing movement and vibration during operation. Replacing a worn damper helps reduce shaking and noise, improving spin performance and overall machine stability. What it does:

• Absorbs and controls tub/drum movement to reduce vibration and noise
• Helps prevent banging, "walking," or out-of-balance shutdowns during spin
• Can address excessive shaking, rattling, and longer spin times
• Restores smoother, more controlled operation when the original damper is worn

• One suspension damper

• Disconnect power and turn off water supply before servicing
• Access location varies by model; support the tub/drum to relieve load before removal
• Note orientation and reuse existing mounting hardware if new fasteners aren't provided
• After installation, re-level the appliance and run a test cycle to verify stability

This regeneration valve directs brine through your dishwasher's built-in water softener during recharge cycles, helping prevent hard-water film and spotting. Replacing a faulty valve restores consistent softening and better cleaning results.

• Opens to route salt brine through the ion-exchange resin during regeneration
• Helps maintain proper water hardness feeding the wash system
• Failure can lead to white film/spots, cloudy glassware, mineral buildup, and reduced cleaning
• Also contributes to inconsistent softener performance over time

• Disconnect power and turn off the water supply before servicing
• Access location varies by model; note hose routing and valve orientation during removal
• Inspect hoses and seals; replace if worn to prevent leaks
• Restore water/power and run a short cycle to check for leaks and proper operation

This water distributor routes wash water to the dishwasher's spray system, restoring proper circulation for thorough cleaning. It's a direct-replacement plumbing component used in compatible Bosch dishwasher models. What it does

• Directs incoming water to the spray arms and wash assembly for even distribution
• Helps restore normal spray pressure and coverage when the original distributor is damaged or clogged
• Works as the plumbing interface between the inlet/valve and internal wash components

• One water distributor

• Disconnect power and shut off the water supply before beginning service
• Handle plastic ports and mounting tabs carefully to avoid cracking; replace any worn seals or gaskets encountered
• Reassemble panels and test a short cycle to ensure proper water flow and no leaks

This small insert is a precision-fit piece that helps secure and align a mating component so it fits and functions properly. Replacing a worn or missing insert restores a solid connection and dependable operation. What it does:

• Provides a snug mounting/locating point for the related part
• Helps prevent looseness, rattling, or misalignment
• Restores proper fit after cracking, wear, or loss
• Common signs include a cracked or missing insert and parts that no longer stay in place

• 1 insert

• Disconnect power (and water supply, if applicable) before servicing
• Compare the new insert to your original to match and orientation
• Remove any broken fragments and clean the area before installation
• Press or snap into place carefully; do not force or overtighten any fasteners

This inlet seal is a small rubber gasket that creates a watertight connection at the dishwasher's water inlet. Replacing a worn seal helps stop leaks and ensures the inlet valve can fill the appliance properly. What it does:

• Seals the water inlet connection to prevent drips or steady leaks underneath the dishwasher
• Maintains a tight seal at the inlet valve so the fill cycle can operate normally
• Commonly replaced when there is visible wear, cracking, or persistent water on the floor
• Helps avoid water damage and the nuisance of repeated drainage or fill errors tied to leaking

• One inlet seal

• Turn off the water supply and disconnect power before servicing
• Remove the inlet valve or access panel as needed to reach the seal; replace with the old seal removed
• Make sure the new seal is seated evenly and the mating surfaces are clean before reassembly