N54 vs N55 vs B58 vs S55
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BMW N54 vs N55 vs B58 vs S55: Performance & Reliability

Ever since the twin-turbo N54 hit the market in the 2007 BMW 335i, BMW has been building on the design of the turbocharged, direct-injected inline 6 engine. In 2010, the 335i received the updated N55 engine followed by the B58 in 2016, however, the model was rebranded to the 340i. Unsurprisingly, the success of the…

BMW N55 Engine Problems

The 5 Most Common BMW N55 Engine Problems – Failures & Performance Problems

For those in the market looking to purchase a BMW 135i, 335i, or 535i one important aspect to consider is reliability. In this post, we intend to highlight the most common N55 engine problems; please keep in mind – this is not an exhaustive list of every single potential problem. All cars and engines will…

N54 N55 Water Pump Replacement

BMW N54/N55 E-Series Electric Water Pump Replacement DIY (Video)

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…

BMW N54 vs N55
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BMW N54 vs. N55 Comparison: Horsepower, Reliability, and Tune-ability

Before purchasing a turbocharged 135i, 335i or 535i it is important to consider the differences between the N54 and N55-powered BMWs. The N54 began production in 2006 and first appeared in the 2007 BMW 335i; in 2008, the N54 was introduced along with the 135i and 535i. BMW’s N55 engine began production in 2009 and…