BMW N54/N55 Electric Water Pump Replacement DIY
Signs of N55 Water Pump Failure:
- Engine overheating significantly – usually rapid over-heating once the pump fails
- Cooling Fan running full speed (noisy)
- Coolant boiling out of coolant cap
N55 CEL Codes for Failing Water Pump:
- 2E81, 2E82, 2E83, 2E84, 2E85
- 377A
- Remember to check fuses
Replacement Part
Water Pump for E-series N55 – $389
Water Pump for F-Series N55 – $449
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