BMW F80 M3 F82 M4 F87 LCI M2 S55 Bare Engine S55B30A 431HP with 43k m, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

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

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW F80 M3 F82 M4 F87 LCI M2 S55 Bare Engine S55B30A 431HP with 43k m, WARRANTY is a high-performance M-series powertrain designed for demanding users looking for a powerful, six-cylinder engine block for advanced projects or professional repairs. We offer a bare engine block, which serves as a solid foundation for further assembly with accessories compliant with the factory specifications of the M3, M4, and M2 LCI models. This solution allows you to precisely select the remaining components according to your service or tuning needs.

Specifications and technical data

• SKU: 2455341
• 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: 43 000

Technical characteristics of the S55B30A engine

The S55 engine family is a modern, inline six-cylinder unit designed for high efficiency and dynamic performance. Its construction, based on a petrol fuel system, ensures quick throttle response, stable operation across a wide rev range, and significant potential for further mechanical and electronic modifications.

As a bare engine, this unit forms the foundation of the entire powertrain – the block, cylinder head, and essential mechanical components create a cohesive base to which accessories can be matched according to the requirements of a specific vehicle configuration. This format is particularly beneficial for professional overhauls, engine swaps, or building a track car, where full control over component selection is essential.

Application in BMW M models

The presented engine is intended for installation in sports M-series models, such as the BMW F80 M3, F82 M4, and F87 LCI M2, where the S55 unit plays a key role in defining performance. Thanks to its structural consistency with factory solutions, the engine allows for maintaining proper geometry, compatibility with the drivetrain, and correct interaction with the vehicle's electronics once the accessories are properly fitted.

The six-cylinder petrol unit perfectly fits the character of these models – it enables high power output while maintaining the refinement typical of BMW inline engines. This solution is frequently chosen both by workshops specializing in the brand and by enthusiasts building projects with a distinct sports profile.

Benefits of choosing a used S55 engine

Choosing a used engine block from the S55 family is a reasonable compromise between costs and maintaining the original BMW design. You receive a base consistent with the factory assumptions of M engineers, which facilitates subsequent installation, tuning, and servicing. This type of solution is particularly attractive when replacing a damaged unit, especially when you want to maintain the correct vehicle specification without having to invest in a complete, new powertrain.

The six-cylinder petrol engine provides wide configuration possibilities – from stock rebuilds to projects oriented towards higher power, while adhering to proper workshop procedures. It is a flexible base that allows you to adjust the level of investment to the intended use of the car, whether it is for daily driving or intensive track use.

Intended for professional workshops and enthusiasts

This engine block from the Engines category is particularly recommended for specialized BMW services and users consciously planning an engine overhaul or swap. The bare configuration requires the transfer or selection of accessories, but in return, it gives full control over the quality of the components used – from the turbocharging system and injection to the cooling and lubrication systems.

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

Knowledge and support when choosing a BMW unit

When planning the purchase of a BMW powertrain, it is worth knowing the typical structural problems of individual series to properly plan the scope of service work and budget. A guide to problematic units, which discusses critical points and indicates what to look for during inspection and installation, can be helpful. You can find more practical information in the article Troublesome BMW E90 engines: check what can ruin your budget!, which will help you better understand the specifics of the brand's units.

If you are considering a wider use of aftermarket components in your BMW project and want to know the arguments in favor of such a solution, take a look at the material Used parts for BMW – is it worth it? Key benefits for brand fans. This is a good supplement to your knowledge when planning the purchase of a used S55 engine and other drivetrain components.