Mini F56 F57 JCW Bare Engine B48A20B Petrol 231HP 69k miles, 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.).

Mini F56 F57 JCW Bare Engine B48A20B Petrol 231HP 69k miles, WARRANTY is a factory power unit from the B48 family, designed for the sporty John Cooper Works versions. It offers a modern petrol construction, optimized for dynamic driving and stable performance. As a bare engine, it serves as a solid base for professional repairs or a complete engine swap in your Mini.

Specifications and technical data

• SKU: 2459234
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 2459234
• Substitutable numbers: 2459234, 11002459234
• Fuel type: Petrol
• Number of cylinders: 4
• Part type: Engine Long Block
• Category: Engines
• Engine code: B48A20B
• Mileage: 69 000

Technical characteristics of the B48A20B unit

The presented engine belongs to the modern family of Mini petrol engines, designed for efficient power utilization and precise operation. The four-cylinder layout combined with petrol injection technology ensures smooth operation and predictable throttle response, which is particularly important in JCW versions focused on dynamic handling.

The B48A20B engine is a popular choice for professional repairs and swaps due to its construction, compatibility with the F56/F57 platform, and good operational characteristics. Stable performance across a wide rev range makes the unit well-suited for both daily use and more demanding sporty driving.

Application in Mini F56 / F57 JCW

The bare engine is intended for installation in Mini F56 and F57 models in John Cooper Works versions, where quick throttle response and repeatable performance are essential. This type of configuration is particularly useful when the existing unit has suffered major mechanical damage or requires costly block repairs, making a full engine replacement more cost-effective.

The four-cylinder petrol engine allows you to maintain the original JCW character while providing the opportunity for further configuration of accessories according to the requirements of a specific vehicle. The unit provides a compatible base for transferring accessories from the damaged engine, which facilitates the repair process and reduces the risk of fitment issues.

Benefits of choosing a used bare engine

Choosing a used engine for a Mini JCW is often a more economical solution than a full rebuild of a damaged block. This type of component allows you to:

• restore the efficiency of the drivetrain while maintaining the original model specification,
• preserve the factory performance parameters of the petrol unit,
• prepare the car for further mechanical modifications, if planned.

Additionally, the mileage of the unit allows you to assess the potential for further operation and plan any necessary service procedures after installation (e.g., replacing selected seals or accessory components), which is important for a conscious approach to repairs.

Professional fitment and verification

To correctly select an engine for your Mini, it is worth paying attention to the engine code designation and compatibility with the body style and JCW variant. If necessary, you can refer to the OEM part number or interchangeable numbers, which facilitate clear identification of the unit in service catalogs and parts selection software.

The B48 family engine is well-known in the community of workshops specializing in the Mini brand, which makes it easy to find a garage with experience in installing such engines. Professional installation and correct configuration of the engine control unit and accessories are crucial for achieving full functionality and trouble-free operation after replacement.

Mini engines – expansion and modernization of the drivetrain

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

For informed selection of a power unit and a better understanding of potential operational problems in modern designs, it is worth consulting expert materials. Practical tips regarding common faults and costly failures in popular models can be found in the article: BMW E90 problematic engines: check what can ruin your budget!.