Dishwasher Leaking or Not Draining? W11443104 Sump with Seal – Fix Drainage & Leaks Fast

If your KitchenAid or Whirlpool dishwasher is leaking from below, draining slowly, or leaving standing water in the tub, the sump assembly is the most likely culprit. In most KitchenAid and Whirlpool dishwashers, the sump assembly houses the drain pump and wash pump and provides the sealed base for water circulation — when the sump cracks or the seal fails, water leaks under the unit and wash performance drops immediately. ⚡ Common failure point in KitchenAid and Whirlpool dishwashers. Part W11443104 is the genuine OEM sump with seal that restores leak-free drainage and full wash performance in one assembly.

❓ Is This the Right Part?

This is the correct fix if ALL of the following are true:

• ✔ Dishwasher powers on and cycles run normally
• ✔ Drain hose and filter have been checked and are clear
• ✔ Water supply and inlet valve confirmed OK
• ✔ Door latch and control board are functioning correctly
• ✔ ONLY problem is leaking from below, slow drainage, standing water in tub, or reduced wash performance

Not sure? Send us your model number — we'll confirm before you order.

🔧 Common Symptoms

• Water leaking from underneath the dishwasher — most common complaint
• Standing water in the bottom of the tub after a cycle
• Dishwasher draining slowly or incompletely
• Reduced cleaning performance due to poor water circulation
• Unusual noise from the pump area during wash or drain phase
• Visible cracks or damage to the sump housing

✔ If these symptoms match, the sump assembly is the most likely failed component in the system.

✔ In most cases, replacing the sump with seal restores leak-free operation and full drainage immediately.

📦 Part Details

• Part Number: W11443104
• Type: OEM dishwasher sump with seal — complete assembly including pump housing and seal
• Replaces: OEM direct-fit assembly — supersedes W11034556, W11446344 (no modification required)
• Brands: KitchenAid, Whirlpool, Maytag

⚙️ Installation Notes

Skill Level: ADVANCED — 60–90 minutes. Disconnect power and shut off water supply before beginning. The sump assembly requires removing the dishwasher from the cabinet, laying it on its back, and disconnecting the pump motor harness, drain hose, and circulation hose before unbolting the sump from the tub. When installing the new W11443104, ensure the seal seats fully and evenly before torquing the mounting hardware — an uneven seal is the most common cause of post-repair leaks. Run a full cycle before reinstalling the dishwasher in the cabinet.

💡 Pro Tip

✓ Model Repair Pages

KDFM404KBS0, KDFM404KPS0, KDPM604KBS0, KDPM604KPS0, KDPM704KPS0, KDPM804KBS0, KDPM804KPS0, KDTM404KBS0, KDTM404KPS0, KDTM604KBS0, KDTM604KPS0, KDTM704KPS0, KDTM804KBS0, KDTM804KPS0, MDB4949SKB0, MDB4949SKW0, MDB4949SKZ0, MDB7959SKZ0, MDB7959SKZ1, MDB8959SKB0, MDB8959SKB1, MDB8959SKK0, MDB8959SKW0, MDB8959SKW1, MDB8959SKZ0, MDB8959SKZ1, MDB9959SKZ0, MDB9959SKZ1, MDB9979SKZ0, MDB9979SKZ1