LG Dishwasher Wash Motor Shaft Seal 4036DD4002C — Fixes Pump-Area Leaks / Restores a Watertight Motor Seal
🇺🇸 Matching U.S. Part Number: 4036DD4002C
4036DD4002C is a genuine LG dishwasher wash-motor shaft seal. It replaces discontinued LG number 4036DD4002A.
The seal fits around the circulation-motor shaft and helps prevent pressurized wash water from escaping from the pump or motor area.
A worn, hardened, split or incorrectly seated seal may contribute to dripping or water accumulation beneath the dishwasher during the wash cycle.
Similar symptoms can also result from a cracked sump or pump housing, damaged circulation pump, loose hose connection, drain-pump seal, door gasket or another water-system component.
Confirm the complete dishwasher model and identify the exact leak location before ordering. Disconnect electrical power and shut off the water supply before service.
❓ Is This the Right Part?
This is the correct part if ALL of the following are true:
- ✔ Dishwasher powers on and runs a full cycle normally
- ✔ Leak is confirmed to originate from the pump or motor shaft area — not the door, hoses, or sump housing
- ✔ Sump housing and pump body are intact and undamaged
- ✔ Inspection confirms the original shaft seal is worn, hardened, split, or displaced
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- Water dripping or pooling beneath the dishwasher during the wash cycle
- Moisture visible around the base of the circulation pump or motor
- Leak occurs during wash but not during drain or fill
- Shaft seal appears hardened, cracked, compressed, or displaced from its seat
✔ A damaged motor-shaft seal is one possible source of a pump-area leak — confirm the exact leak origin before ordering.
✔ May correct the leak when inspection confirms that the original shaft seal is damaged and the mating pump components remain serviceable.
📦 Part Details
- Part Number: 4036DD4002C
- Replaces: 4036DD4002A (discontinued)
- Type: OEM dishwasher wash-motor shaft seal / circulation-pump motor seal
- Manufacturer: LG Electronics
- Note: Not the same as MDS58387601 (sump-pump gasket) or MFZ32863101 (separate pump-gasket application) — confirm the correct seal for your pump design
Inspect the circulation pump motor (4681ED1004B) and sump assembly (AJH32598001) while the pump area is disassembled. A shaft seal that has failed due to motor bearing wear will fail again on the new seal if the motor is not also serviced. Confirm the motor shaft is smooth and within spec before installing the replacement seal.
⚙️ Installation
Skill Level: ADVANCED — 60–90 minutes. Disconnect power and shut off the water supply before servicing. Access the circulation pump from below the dishwasher tub. Remove the pump assembly, extract the old shaft seal from the motor shaft seat, clean the seating surface, and press the new seal evenly into position. Reassemble and run a short wash cycle to confirm the leak is resolved before returning to normal use.
✓ Compatible Models
Independently verified compatible models: LDF7811ST, LDS5811ST, LDS5811WW. Additional LG dishwasher models may be compatible. Contact us to verify your model number before ordering.
💡 Pro Tip
Pump-area leaks in LG dishwashers can originate from the motor shaft seal, the drain-pump seal, the sump housing O-ring, or a cracked pump body — and each requires a different part. Run the dishwasher with the lower panel removed and a flashlight aimed at the pump area to pinpoint exactly where the water is coming from before ordering any seal or gasket.
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
Buy Online Pick Up In-Store
Kitchener, Ontario N2E 1W8
- Choosing a selection results in a full page refresh.
