1. Product Overview
This manual provides instructions for the installation, operation, and maintenance of the UpStart Components W10509257 Dishwasher Door Gasket. This replacement part is designed to restore the sealing integrity of your dishwasher door, preventing leaks and ensuring efficient operation.
Key Features and Compatibility:
- Direct replacement for W10509257 and WPW10509257.
- Compatible with Kenmore/Sears dishwasher model 665.1744990.
- Also compatible with part numbers AP6022476, 3368994, 3376927, PS11755809, W10082795.
- Constructed from durable, high-quality material designed for longevity.

Image 1.1: The UpStart Components W10509257 Dishwasher Door Gasket, shown coiled. This black rubber gasket is designed to create a watertight seal around the dishwasher door.
2. Safety Information
Always prioritize safety when performing appliance repairs. Failure to follow these safety guidelines may result in injury or damage to property.
- Disconnect Power: Before beginning any repair, always unplug the dishwasher from its power source or turn off the circuit breaker supplying power to the appliance.
- Wear Protective Gear: Consider wearing gloves to protect your hands from sharp edges or cleaning solutions.
- Read Instructions: Familiarize yourself with all steps before starting the installation.
- Keep Work Area Clear: Ensure your work area is well-lit and free of clutter.
3. Installation Instructions
3.1 Tools Required
- Flat-head screwdriver (optional, for prying)
- Cleaning cloth or sponge
- Mild detergent (for cleaning)
3.2 Preparation
- Disconnect Power: Unplug the dishwasher or turn off the circuit breaker.
- Open Door: Fully open the dishwasher door to access the existing gasket.
3.3 Gasket Replacement Steps
- Remove Old Gasket: Gently pull the old gasket out of the channel around the dishwasher tub. Start from one corner and work your way around. It may be held in place by friction or small clips.
- Clean Gasket Channel: Thoroughly clean the channel where the gasket sits. Remove any food debris, grime, or detergent residue using a cleaning cloth and mild detergent. A clean channel ensures a proper seal for the new gasket.
- Install New Gasket: Begin by pressing one end of the new gasket into the channel at the top center of the dishwasher tub. Work your way around the perimeter, firmly pressing the gasket into the channel. Ensure the ribbed side of the gasket faces inward towards the dishwasher tub.
- Ensure Proper Seating: Once the gasket is fully installed, run your hand along the entire length to ensure it is evenly seated and no sections are bulging or twisted.
- Close and Open Door: Close the dishwasher door firmly, then open it. Repeat this a few times to help the new gasket settle into its position and form a proper seal.
- Reconnect Power: Plug the dishwasher back in or turn on the circuit breaker.
- Test for Leaks: Run a short wash cycle and carefully observe the perimeter of the dishwasher door for any signs of water leakage. If leaks occur, adjust the gasket in the affected area.
4. Operation and Usage
Once the new door gasket is installed, the dishwasher should operate as intended, with a secure, watertight seal. Ensure the dishwasher door closes completely and latches without excessive force. If the door feels unusually stiff or difficult to close, re-check the gasket's seating.
5. Maintenance
Regular maintenance of your dishwasher door gasket can extend its lifespan and prevent future leaks.
- Regular Cleaning: Periodically wipe down the gasket and its channel with a damp cloth and mild detergent to remove food particles, grease, and detergent buildup. Rinse thoroughly.
- Inspect for Damage: Routinely check the gasket for any signs of wear, cracks, tears, or hardening. A damaged gasket will compromise the seal.
- Avoid Harsh Chemicals: Do not use abrasive cleaners or harsh chemicals on the gasket, as these can degrade the material.
6. Troubleshooting
If you encounter issues after replacing the gasket, refer to the table below for common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Dishwasher leaks from door | Gasket not properly seated or installed. | Open the door and re-examine the gasket. Ensure it is fully and evenly pressed into the channel. Run another test cycle. |
| Door is difficult to close or latch | New gasket is stiff or not fully settled. | Close and open the door several times. The gasket may need time to compress and conform. Ensure no part of the gasket is pinched. |
| Water pooling at bottom of door | Gasket is not sealing correctly at the bottom. | Inspect the bottom section of the gasket for proper seating and any obstructions. |
7. Specifications
- Part Number: AP-WPW10509257-DL1035
- Manufacturer: UpStart Components
- Compatible Part Numbers: W10509257, WPW10509257, AP6022476, 3368994, 3376927, PS11755809, W10082795
- Material: Durable rubber compound
8. Warranty and Support
This product is an UpStart Components Brand replacement part. Any warranties for this product are offered solely by UpStart Components. For specific warranty details or support, please refer to the documentation provided with your purchase or contact UpStart Components directly.
Return Policy: The buybox winner offers a 30-day refund/replacement policy. Please consult your retailer for their specific return and exchange procedures.