BMW N54/N55 E-Series Electric Water Pump Replacement DIY (Video)
Meet Jake
Jake currently owns two N54 powered BMW’s – an E60 535i and E82 135i. Jake has 10 years of experience maintaining, repairing, and upgrading his BMW’s. The 135i features a single turbo Precision 6266 conversion capable of 700+whp; Jake completed the entire project on his own. With over 200 automotive articles published, Jake brings a balance of writing skill, hands-on BMW experience, and technical knowledge to the table.
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