How to Replace W10300924 Dishwasher Door Gasket on Whirlpool & KitchenAid — Stop Leaks Fast

Water pooling under your Whirlpool or KitchenAid dishwasher? The door gasket is probably shot. I've replaced this gasket on dozens of models — from the WDT750SAHZ0 to the KDFE104DSS — and it's almost always the same story: the rubber dries out, cracks along the bottom corners, and suddenly you're mopping your kitchen floor after every wash cycle.

The good news? This is one of the easiest dishwasher repairs you can do yourself. No special tools needed, and you'll have it done in under 30 minutes. The W10300924 gasket fits most Whirlpool, KitchenAid, Maytag, and Kenmore dishwashers made in the last decade.

What You Need Before Starting

• New W10300924 door gasket
• Towel (to dry the gasket channel)
• Mild dish soap and water
• Optional: needle-nose pliers (for stubborn old gasket removal)

Repair time: 20-30 minutes
Difficulty: EASY

Safety First

This is a cold repair — no electrical work involved. You don't even need to disconnect power, though I usually do anyway out of habit. Make sure the dishwasher is empty and the door is cool. If you just ran a cycle, wait 15 minutes. The metal door can get surprisingly hot.

Step 1: Remove the Old Gasket

Open the dishwasher door fully. Grab the old gasket at one corner and pull it straight out of the metal channel that runs around the door. It should come out easily — it's just friction-fit into the slot. If it's stubborn (especially on older units), use needle-nose pliers to grip and pull sections at a time. Work your way around the entire perimeter until it's completely removed.

Step 2: Clean the Gasket Channel

Here's where most people skip a step and regret it later. Use a damp towel with a drop of dish soap to clean out the channel where the gasket sits. You'll find mineral deposits, dried detergent, and food particles in there. Dry it completely. A clean channel means the new gasket seats properly and doesn't leak from day one.

Step 3: Install the New W10300924 Gasket

Start at the top center of the door. Press the bulb edge of the new gasket into the channel. Work your way down one side, then the other. Use your thumbs to push it firmly into place as you go. The gasket should sit flush in the channel with the soft sealing edge facing outward toward the tub. When you get to the corners, make sure there's no bunching or gaps — corners are where leaks usually start.

Step 4: Check the Seal

Close the door and look at the seal from the outside. Run your finger around the entire perimeter where the door meets the tub. You should feel the gasket making contact all the way around. If there's a gap anywhere, open the door and reseat that section. One customer put it perfectly: "right part fits great" — and it will if you take an extra minute to check your work.

Testing After Installation

Run a short rinse cycle without dishes. Watch the bottom of the dishwasher for the first five minutes. If you're going to see a leak, it'll show up right away. Check the floor around the dishwasher after the cycle completes. No water? You're done. The gasket should last 3-5 years depending on how often you run the machine.

Frequently Asked Questions

Will this gasket fit my KitchenAid KDFE104DBL dishwasher?

Yes. The W10300924 is the correct gasket for the KDFE104DBL series (models KDFE104DBL1, KDFE104DBL2, KDFE104DBL3, and KDFE104DSS0). It also fits dozens of Whirlpool models including the WDT750SAHZ0, WDTA50SAHZ0, and WDT970SAHZ0. Check the compatible models list to confirm your specific model number.

Why is my dishwasher still leaking after replacing the gasket?

Two common causes: the gasket isn't fully seated in the channel (go back and press it in firmly all the way around), or the door latch assembly is worn and not pulling the door tight enough against the gasket. If the latch is bad, you'll need to replace that too — but try reseating the gasket first.

Can I reuse the old gasket if it looks okay?

Don't. Even if it looks fine, the rubber loses elasticity over time. A gasket that's started leaking once will leak again — usually worse. These gaskets cost $40 and save you hundreds in potential water damage. It's not worth the gamble.