BMW N55 Engine Cylinder Configuration and Performance Insights
The BMW N55 engine, a cornerstone of BMW’s inline-six legacy, delivers robust performance with a distinct cylinder arrangement that balances power and refinement—critical for enthusiasts and mechanics alike.
BMW N55 Engine Cylinder Configuration
The BMW N55 engine features six cylinders arranged in a straight-six configuration, producing a total displacement of 2.6 liters across its variants. This layout ensures smooth power delivery and excellent balance, hallmark traits of BMW’s inline-six design philosophy. The N55’s cylinder heads are engineered for high volumetric efficiency, supporting both performance and durability under demanding conditions.
Variants and Cylinder Performance
The N55 is available in two primary versions: the naturally aspirated N55-B43 and the turbocharged N55-B58. While both share the six-cylinder block, the B43 produces around 288 horsepower with precise cylinder firing sequences, whereas the turbocharged B58 variant boosts output to 330 horsepower, leveraging forced induction without sacrificing the smooth, linear power delivery typical of the N55 family. Each cylinder contributes to the engine’s balanced crankshaft dynamics, minimizing vibration and enhancing drivability.
Cylinder Number and Engineering Significance
With exactly six cylinders, the N55 embodies BMW’s commitment to inline-six architecture, offering superior primary balance and a refined power band. This configuration allows smooth transitions across the rev range, making the N55 well-suited for sport-touring and performance applications. The precise engineering behind each cylinder’s placement, combustion chamber design, and cooling system ensures long-term reliability and responsiveness, reinforcing the N55’s reputation in BMW’s engine portfolio.
Understanding the six-cylinder layout of the BMW N55 engine is essential for appreciating its performance, balance, and engineering excellence. Whether you’re a driver seeking power or a technician maintaining peak condition, knowing the N55’s cylinder configuration empowers informed decisions. Dive deeper into BMW’s engine heritage to unlock optimal driving and maintenance strategies.
Technical Training The information contained in this manual is not to be resold, bartered, copied or transferred without the express written consent of BMW of North America, LLC ("BMW NA"). N55 ENGINE Reference Manual RevisionDate. We demonstrated the cylinder order number on our N52 engine that is in 2007 BMW e90 325i but the cylinder order should apply to multiple BMW 6 cylinder engines.
The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo. The engines are marked on the crankcase with an engine identification code for unique identification.
This engine identifier is also required for approval by the authorities. The N55 engine further develops this identification system and the code has been reduced from previously eight to seven characters. The engine serial number can be found under the engine identifier on the engine.
Together. The N55B30 engine is one in a long line of BMW inline six-cylinder engines. It replaced the N54, a wildly popular engine known for its potential for big horsepower.
Like its predecessor, the N55 is a turbocharged 3.0L inline-6 cylinder engine utilizing direct fuel injection. It was available in just about every chassis BMW used during its life, including the F01 7-series, F16 X6, and the F87. View and Download BMW N55 manual online.
N55 engine pdf manual download. The document provides information on identifying engine identification numbers for various BMW engine models and discusses consumable parts like sealing compounds, cleaning agents, and lubricants for engine repair. Location and methods for identifying engine identification numbers are shown for many different BMW engine models.
An overview is also given of common consumable parts used in. The N55 engine series is a six-cylinder piston engine with two camshafts. This engine has been in production since 2009 and was equipped with direct injection and a turbine.
This engine was launched for the BMW 535i as a modification in the GranTurismo. The N55 replaced the N54, although the latter was produced until 2011. What BMWs Have The N55 Engine? The BMW N55 engine is a popular, highly acclaimed turbocharged 3.0 liter inline 6-cylinder motor that was first introduced in 2009.
It has provided reliable, smooth power to many modern BMW models over the years. Those looking to buy a pre-owned vehicle with an N55 engine will find it in vehicles such as the 1 Series E81/E82/E88 (128i and 135i), Many of the 3. Explore the BMW N55 engine's specs, configuration, oil requirements, and maintenance intervals for optimal performance and longevity.