GE Dishwasher Leaking from the Pump Area? Pump O-Ring Gasket WG04A03908 – Fix Pump Seal Fast

A GE dishwasher that leaks water from the bottom or under the unit during the wash cycle almost always has a failed pump O-ring gasket — a $21 seal that prevents a flooded kitchen floor. In most GE GBF, GBP, and GBT series dishwashers, the pump O-ring gasket WG04A03908 seals the wash pump assembly to the sump, preventing pressurized wash water from escaping during the cycle. When it hardens, cracks, or deforms, water bypasses the seal and leaks onto the floor. ⚡ One of the most common leak sources in GE dishwasher pump assemblies. Part WG04A03908 is the genuine OEM O-ring gasket (Item #607 in diagram) that restores a watertight pump seal and stops the leak immediately.

❓ Is This the Right Part?

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

• ✔ Your dishwasher powers on and runs through the wash cycle normally
• ✔ Water is leaking from the bottom center or front of the unit — not from the door seal
• ✔ The door gasket is intact and sealing correctly — no visible tears or gaps
• ✔ The leak occurs during the wash or rinse cycle — not during fill or drain
• ✔ ONLY problem is water pooling under the dishwasher during operation

🔧 Common Symptoms

• Water pooling on the floor under the dishwasher during the wash cycle — most common search: “GE dishwasher leaking from bottom”
• Wet floor discovered after cycle completes — leak not visible during operation
• Water visible dripping from the pump housing or sump area
• Musty smell under the dishwasher from repeated minor leaks
• Visible cracking, hardening, or deformation on the old O-ring gasket
• Leak worsens over time as the gasket continues to degrade

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

✔ In most cases, replacing this pump O-ring gasket stops the leak immediately.

📦 Part Details

• Part Number: WG04A03908
• Type: Pump O-Ring Gasket – GE Dishwasher Wash Pump Seal (Item #607 in diagram)
• Replaces: OEM direct-fit gasket — supersedes 12176000002603 (no modification required)
• Brands: GE, GE Monogram

⚙️ Installation Notes

Skill Level: Moderate — 30–45 minutes. Disconnect power and turn off the water supply before beginning. Pull the dishwasher out from the cabinet to access the pump assembly from below, or remove the lower spray arm and sump cover to access from inside the tub. Remove the pump assembly, clean the seating surface thoroughly, and seat the new O-ring WG04A03908 into the groove without twisting or stretching it. Reassemble, restore power and water, and run a full cycle while monitoring for leaks before pushing the unit back into the cabinet.

💡 Pro Tip

Model hub pages: GBF410SGP0BB, GBF410SGP0WW, GBF410SSP0SS, GBF410SSPSS, GBF412SSMSSX, GBF532SGP0BB, GBF532SGP0WW, GBF532SSP0SS, GBP420SSP0SS, GBP534SGP0WW, GBP534SSP0SS, GBT632SSMSSEC, IO1702LI6, MBF420SGP0WW