How to Install Bosch Dishwasher Lower Door Seal 00669221


Steven E / Wednesday June 18, 2025


Is your Bosch dishwasher leaving puddles of water on your kitchen floor? The culprit could be a faulty lower door seal, but worry not—replacing it can be a breeze! Dive into our simple step-by-step guide, complete with a how-to video below, and banish those leaks once and for all.

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Noticing water pooling at the bottom of your Bosch dishwasher door? That could mean the lower door seal (part 00669221) is worn out or damaged. This little strip does the heavy lifting when it comes to keeping water inside where it belongs. Luckily, replacing it is a simple fix that doesn’t require any special tools or advanced skills. In this guide, we’ll show you how to remove the old seal and install a new one to stop those pesky leaks for good. Let’s get started!

Watch here: How to replace lower door seal in a dishwasher 

The information in this article may not apply to your specific appliance model. We recommend consulting your manufacturer’s documentation or contact us with any questions.

Tools and materials needed

Before you get started, take a minute to make sure you have what you need:

Safety first

Your safety should always be the top priority when performing any appliance repair. 

  • Always power off and unplug your appliance or switch off the circuit breaker before you attempt any maintenance or replacement work. This keeps you safe by preventing any risk of electric shock. 
  • If the appliance has recently been used, give it plenty of time to cool down before working on it. 
  • Take your time while working to prevent accidents and personal injuries. Rushing is the enemy of precision.
  • Work in a well-lit area so you can clearly see and access appliance parts.
  • Keep your workspace free of clutter and other obstacles. Keep children and pets away from the work area.
  • Never work on internal parts with wet hands. Make sure the work area is completely dry.
  • Check the user manual to see if there are specific installation or safety instructions related to your appliance or replacement part. 
  • Be gentle when handling or removing parts. Excessive force might damage the appliance or cause personal injury.
  • Wear insulated work gloves to protect your hands from sharp metal parts and debris.
  • When working with wires, avoid touching any exposed wires or terminals. If you need to touch a wire, use a non-conductive tool or wear insulating gloves to prevent electrical shock.
  • Don’t test live voltage with a multimeter if you’re unfamiliar with how to prevent short-circuiting.
  • Consider wearing safety glasses and/or a dust mask when working with chemicals, dust or a large amount of debris to prevent irritation or injury.
  • If your appliance has any parts that hold water, turn off the water supply at the outlet before beginning repairs. Keep towels ready to catch any residual water in the system when removing parts.

Replacement Steps

Step 1 – Remove the Outer Door Panel

  1. Open the door all the way.
  2. Use a Torx 20 screwdriver to remove the six screws on the inner door panel.
  3. Close the door.
  4. Slide down the outer door panel to remove it.

Step 2 – Uninstall the Dishwasher

  1. Use a Phillips screwdriver to remove the two screws securing the dishwasher to the countertop.
  2. Use a Phillips screwdriver to remove the two screws holding the access panel.
  3. Remove the access panel.
  4. Place a towel and container under the water valve in case of leaks.
  5. Use a 5/8-inch open-ended wrench to remove the water line.
  6. Use a 5/16-inch nut driver to loosen the clamp on the drain hose and remove it from the air gap.
  7. Pull the dishwasher out.

Step 3 – Remove the Door

  1. Use needle-nose pliers to remove the door cable hooks from the door hinges.
  2. Open the door and support it.
  3. Use a Torx 20 screwdriver to remove the two screws on each side of the door panel to release the inner door panel from the hinges.
  4. Carefully pull the door out of the hinges.
  5. Turn it over and place it on the floor.

Step 4 – Remove the Old Seal and Install the New One

  1. Remove the old door seal from the tub lip.
  2. Use a sponge to clean the tub lip.
  3. Snap the new lower door seal onto the tub lip.
  4. Align the seal side brackets with the holes in the hinges.
  5. Temporarily insert the Torx 20 screws to hold it in place.

Step 5 – Install the Inner Door

  1. Install the inner door on the hinges.
  2. Support the door with a box.
  3. Remove the temporarily installed Torx 20 screws.
  4. Align the holes and attach the inner door panel with the Torx 20 screws on each side.
  5. Close the door.
  6. Place the hinge cable around the bottom roller.
  7. Use needle-nose pliers to hook it onto the hinge.
  8. Repeat the process on both sides.

Step 6 – Reinstall the Dishwasher

  1. Push the dishwasher back under the counter.
  2. Manually thread the water line and use the 5/16-inch wrench to tighten it.
  3. Attach the drain hose to the air gap.
  4. Use the 5/8-inch nut driver to tighten the clamp.
  5. Remove the towel and container.
  6. Open the door.
  7. Use a Phillips screwdriver to reinstall the screws that mount the unit to the counter.
  8. Use a Phillips screwdriver to reinstall the screws on the access panel.

Step 7 – Reinstall the Outer Door Panel

  1. Install the outer door panel by sliding it up and pushing it onto the door.
  2. Open the door and secure the panel with the six Torx 20 screws.
  3. Close the door.

Step 8 – Finish Up

  1. Plug the unit back in.
  2. Turn the water back on.
  3. Run a short cycle and check for any leaks.

More information

Thanks for reading! We hope this guide helped you replace the lower door seal in your Bosch dishwasher. 

If you still need some replacement parts, grab your model number and head over to AppliancePartsPros.com. We offer over two million parts and most orders arrive in two business days. If you need some help with finding the right part or placing an order, you can contact our team at 1 (877) 477-7278.

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man and woman shopping for a dishwasher