BMW E90 E91 E92 E93 Complete Engine 335i N54 N54B30A 306HP 72k miles WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

BMW E90 E91 E92 E93 Complete Engine 335i N54 N54B30A 306HP is a six-cylinder, turbocharged gasoline power unit designed for the dynamic versions of the 3 Series. This N54 family engine is highly regarded for its excellent flexibility, high power potential, and characteristics that perfectly suit a sporty driving style. Thanks to its factory configuration, it provides significantly higher performance compared to the base units installed in these models.

Specifications and technical data

• SKU: p0415043-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0415043
• Substitutable numbers: 11000415043, 0415043, 11000415044, 0415044
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Mileage: 59 000

Technical characteristics and purpose

The N54B30A engine is an inline six-cylinder gasoline unit, known for its smooth operation and high level of refinement. The R6 configuration promotes even power delivery, and the applied design solutions allow for achieving very good parameters while maintaining reasonable fuel consumption relative to performance. The unit was designed for the BMW 3 Series E90, E91, E92, and E93 generations in the 335i version, where it serves as the main power source in variants with a distinctly sporty character.

The engine belongs to the Engines category, which means it is a complete power unit intended for installation in the engine bay, rather than a single component. As such, it provides a solid foundation both for standard operation and for further mechanical or electronic modifications if the user plans to increase performance within the limits intended by the manufacturer.

Benefits of using the N54 unit in the BMW 3 Series

Using this unit in a BMW E90, E91, E92, or E93 allows for very good dynamics while maintaining the handling characteristics typical of the brand. Key advantages include:

• High power output – ensures decisive acceleration across the entire rev range.
• Inline six-cylinder configuration – promotes smooth operation and reduced vibration.
• Gasoline unit – guarantees quick throttle response and pleasant rev characteristics.
• Great potential for further modifications – a popular choice among mechanical and electronic tuning enthusiasts.
• Consistency with the 3 Series drivetrain – the engine was factory-designed to work with the appropriate transmissions and accessories in these models.

Thanks to these features, the BMW E90 E91 E92 E93 Complete Engine 335i N54 N54B30A 306HP is an attractive proposition both for standard unit replacement and for modernization projects focused on improving performance.

Condition, mileage, and practical application

The offered unit comes from the secondary market, which allows for significantly lower repair or modernization costs compared to purchasing a new engine. The declared mileage is relatively low for this class of unit, which in practice translates into a favorable starting point for further operation after proper installation and service maintenance. This type of engine is particularly interesting for users who:

• plan to replace a worn or damaged unit in their BMW 3 Series,
• want to restore the full efficiency and dynamics of the 335i version,
• are looking for a base for a high-performance project based on the proven N54 design.

Before installation, standard preparatory steps are recommended, such as verifying accessories, checking system tightness, and replacing consumables in accordance with BMW service procedures. This approach increases the chance of long-term and stable operation of the unit after installation.

Selection, part numbers, and vehicle compatibility

The engine belongs to the original line of BMW units intended for the 3 Series E90–E93 generation in the 335i version, which makes it easy to match to a specific vehicle configuration. The product's technical specification includes the OEM part number and interchangeable numbers, which allow for precise verification of compatibility with a given car. When selecting, it is recommended to use the manufacturer's markings and vehicle data (model, year, engine version) to avoid installation errors.

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as blocks, cylinder heads, or complete power units, check the available parts in the BMW Engines category.

Expert support and additional information

Power units used in the BMW 3 Series E90 have their own specific operational requirements, so before making a purchase decision, it is worth familiarizing yourself with typical issues and service recommendations. A practical discussion of the most problematic engines in this model can be found in the article: Troublesome BMW E90 engines: check what can ruin your budget!. This is a helpful source of knowledge when planning a repair or unit replacement.

If you are considering buying a used engine and want to better understand the differences between theory and practice, selection procedures by part numbers, and real savings, it is worth reading the expert guide: Why it is worth buying used transmissions and engines – facts instead of myths. This will allow you to consciously assess the benefits of choosing a used power unit for your BMW project.