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

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

N55 Common Engine & Reliability 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…

BMW N55 Turbo Upgrade Options & Setup Guide
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BMW N55 Turbo Upgrade Options & Setup Guide

Turbos are great. Especially BMW’s N55 twin-scroll turbocharged engine. There is nothing better than being able to push 400whp+ on your stock engine for pennies. Well, maybe there is something better…UPGRADED TURBO! This N55 turbo upgrade guide will dig into the intricacies of upgrading your N55 turbo and help you decide whether stage 1, 2…

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

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 Comparison: Horsepower, Reliability, and Tune-ability
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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 BMW’s. 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…