BMW F80 M3 F82 M4 F87 LCI M2 S55 Bare Engine S55B30A 431HP New Timing 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 New Timing WARRANTY is a used, complete bare engine block from the S55 family, designed for BMW sports models with petrol engines. This solution is intended for users looking for a technically advanced base for repairs, swaps, or professional powertrain upgrades, featuring a new timing chain system already installed. By maintaining the factory S55B30A engine code specification, this bare engine serves as a solid starting point for further accessory configuration.

Specifications and technical data

• SKU: 2455341-2
• 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 bare engine

The presented bare engine belongs to the Engines category and represents a high-performance BMW petrol unit from the S55 family. The six-cylinder inline design ensures high refinement and significant potential for further tuning. The S55B30A engine code is used in top-tier M variants, which translates into an advanced block architecture, optimized oil channels, and preparation for high-performance track and road applications.

The engine is adapted for petrol fuel, allowing for the use of modern ignition and boost maps, as well as a wide range of premium fuels. The number of cylinders and the structural characteristics make this unit an attractive base both for mounting stock accessories and for tuning projects where thermal and mechanical stability are paramount.

Application range in BMW M models

The S55B30A bare engine is designed for installation in BMW F80 M3, F82 M4, and F87 LCI M2 models, which are cars with a distinctly sporty character. By maintaining the original engine code, it is possible to match the unit to factory wiring harnesses, ECUs, and accessories characteristic of these body versions. This is particularly important for post-accident repairs, replacements after failure, or projects where compatibility with the vehicle's factory architecture is crucial.

Such a solution reduces the need for modifications to the electrical installation and cooling system, and also facilitates subsequent computer diagnostics. In practice, this means shorter workshop turnaround times and greater predictability of the final result after installation.

New timing and engine mileage

A significant advantage of the offered bare engine is the new timing chain system, which significantly increases operational safety after installation. Replacing timing components is one of the key service operations in modern petrol units, and performing it before sale reduces the risk of costly failures in the future. For workshops and end-users, this means fewer additional tasks during the first start-up and greater peace of mind during further driving.

The engine has documented mileage, which allows for a better assessment of its service history and planning of further maintenance. Combined with the new timing system, this creates a favorable compromise between purchase cost and the expected durability of the unit in road and sports applications.

Professional application and selection by engine code

The S55B30A bare engine is particularly recommended for specialized workshops, BMW service centers, and enthusiasts planning a conscious mechanical project. Selection by engine code facilitates verification of compatibility with the existing vehicle configuration, including accessories, engine control unit, and drivetrain. This allows for precise planning of the scope of work, the list of required additional parts, and the installation schedule.

For users who want to deepen their knowledge about purchasing used power units, an expert guide describing facts and myths related to such components will be useful – it details procedures for selection by VIN and OEM numbers, as well as cost proportions and practical examples: Why it is worth buying used gearboxes and engines – facts instead of myths.

Support with selection and additional materials

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

When planning to purchase a used bare engine, it is also worth reading a practical step-by-step guide that discusses how to assess the condition of the unit, what to look for during inspections, and how to minimize the risk of a bad choice: How to buy a used car engine and not get scammed – a step-by-step guide.