BMW F80 M3 F82 M4 F87 LCI M2 S55 Complete Engine S55B30A 431HP 49k, 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 F80 M3 F82 M4 F87 LCI M2 S55 Complete Engine S55B30A 431HP is an advanced powertrain unit from the M Power family, designed for sports models of the BMW F-series. The engine belongs to the Engines category and serves as an attractive base for professional replacement or powertrain upgrades in high-performance vehicles. Thanks to its six-cylinder design and gasoline fuel system, it provides dynamic performance characteristics and significant potential for further configuration.

Specifications and technical data

• SKU: 2455341-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2455341
• Substitutable numbers: 11002455341, 2455341, 11002433194, 2433194, 11002288662, 2288662
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Engine code: S55B30A
• Mileage: 49 000

Technical characteristics of the S55B30A unit

The presented engine belongs to the S family, developed by the BMW M division for sports and track applications. The S55B30A code denotes an inline, six-cylinder gasoline unit, which in its factory version achieves 431 HP, translating into very fast throttle response and high flexibility across the entire rev range. The use of a six-cylinder layout promotes smooth operation, and the configuration typical for the M3, M4, and M2 LCI allows for direct compatibility with the factory architecture of these models.

The engine was designed to withstand high dynamic loads, characteristic of track driving and intensive road use. The high stock power also provides a solid starting point for users planning further software or hardware modifications, while maintaining appropriate service standards.

Application in BMW M models

The S55B30A powertrain unit is intended for installation in sports BMW F-series models, such as the F80 M3, F82 M4, and F87 LCI M2. This means that the engine construction, mounting points, and accessory layout are adapted to the factory solutions used in these vehicles. As a result, the engine can be used both as a replacement part after a failure and as a base for a modernization project within the same generation of vehicles.

In practice, this allows for maintaining consistency with the original BMW powertrain, which facilitates integration with existing electronics, cooling systems, and drivetrain. For workshops specializing in the BMW brand and users who consciously select components, this is a significant advantage in terms of installation predictability and subsequent operation.

Operational parameters and condition

The engine belongs to the gasoline unit group, which is consistent with the character of the M3, M4, and M2 LCI models focused on dynamic, sports driving. The use of six cylinders in an inline layout promotes smooth operation and favorable refinement, and also enables efficient power utilization across the entire rev range. The declared mileage allows for assessing the degree of wear in the context of further operation and planning any necessary service work after installation.

The product is marked as used, which in practice means that before installation, it is worth considering standard inspection procedures at a specialized BMW service center or a workshop dealing with M units. This approach allows for optimizing engine durability after the swap and adjusting the maintenance schedule to the individual requirements of the user.

Benefits of choosing an original BMW engine

Choosing a complete S55B30A engine from the M Power family is a solution that allows for maintaining consistency with the vehicle's factory specification. The original BMW unit ensures:

• compatibility with factory control and diagnostic systems,
• fitment for the stock powertrain of F80, F82, and F87 LCI models,
• potential for further configuration for sports or track use,
• preservation of the power delivery characteristics typical for the M3/M4/M2 LCI.

For users who want to avoid experimenting with non-original replacements, using a unit from the same engine family is a reasonable and technically safe choice.

Fitment, numbers, and selecting the right unit

The engine has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification in BMW catalogs and parts selection systems. Before purchasing, it is worth comparing the markings with the vehicle documentation or consulting a mechanic specializing in the brand to confirm full compatibility with the specific M3, M4, or M2 LCI version. Such an approach minimizes the risk of errors when ordering and speeds up the installation process.

Additionally, thanks to the unique engine code, the workshop can more easily select the appropriate operating fluids, spark plugs, or accessory components, which translates into more efficient service after the unit is installed in the car.

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 powertrain units, check the available parts in the BMW Engines category.

To better plan the budget associated with replacing the powertrain unit and avoid typical problems known from other series, it is worth familiarizing yourself with practical tips regarding problematic units in older models, available in the article Problematic BMW E90 engines: check what can ruin your budget!.