BMW F45 225i 225iX X1 F48 25iX Petrol B48 Bare Engine B48A20B 231HP 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 F45 225i 225iX X1 F48 25iX Petrol B48 Bare Engine B48A20B 231HP is a used, original B48 engine block designed for modern BMW petrol models. This bare unit provides a solid foundation for professional repair or conversion, allowing you to maintain factory performance characteristics and specifications. By retaining the OEM design, it ensures technical consistency with the factory powertrain architecture.

Specifications and technical data

• SKU: 2459230-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2459230
• Substitutable numbers: 2459230, 11002459230, 2364440, 11002364440, 2409865, 11002409865, 11002459231, 2459231
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Engine code: B48A20B
• Mileage: 49 000

Purpose and compatibility

The presented engine block belongs to the Engines category and was designed for BMW F45 225i / 225iX and X1 F48 25iX models equipped with the B48A20B petrol unit. The four-cylinder design ensures a compact build, smooth operation, and the modern torque characteristics typical of this generation of BMW engines.

The bare engine block is the right choice when the existing unit has suffered mechanical damage (e.g., cracked block, damaged bottom end), while the auxiliary components and accessories remain in good working condition. This allows for optimized repair costs while maintaining high technical consistency with the vehicle's factory configuration.

Construction and characteristics of the B48A20B unit

The B48A20B engine is a modern, four-cylinder petrol unit developed for efficient power and fuel utilization. The architecture provides:

• a compact, rigid block design, beneficial for durability and vibration reduction,
• a four-cylinder layout that promotes smooth operation and predictable load characteristics,
• compatibility with modern engine management systems used in the BMW F45 and X1 F48.

As a bare engine block, the unit serves as a foundation for further assembly with accessories, giving the workshop or user great flexibility in terms of configuration and the use of existing components.

Condition, mileage, and service application

The engine comes from a vehicle operated under road conditions, and its mileage is documented in the technical specification. This level of usage is typical for used units that can still be effectively utilized in professional powertrain repairs. A used engine block significantly reduces repair costs compared to a brand-new unit, while maintaining the original BMW design.

This type of solution is particularly recommended for:

• workshops specializing in the BMW brand, performing comprehensive engine overhauls,
• users who want to restore the full functionality of their vehicle after a mechanical engine failure,
• modernization projects where maintaining compliance with the factory engine code is crucial.

Benefits of choosing an original BMW engine block

Choosing an original B48 family engine block comes with a number of practical advantages. The factory BMW design means predictable mounting points, compatibility with stock components, and no need to interfere with the electrical installation or engine management (when correctly matched to the specific vehicle version). For a workshop, this translates into more efficient installation and a lower risk of adaptation issues.

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

Selection by VIN/OEM and expert knowledge

To correctly match the engine block to a specific BMW vehicle, it is recommended to use the VIN and catalog numbers associated with the B48A20B unit. This helps avoid accessory incompatibility, differences in mounts, or varying design versions within the same engine family. Professional verification by VIN minimizes the risk of additional installation costs.

For users and workshops who want to deepen their knowledge about the cost-effectiveness of using used power units, selection procedures, and common myths associated with such solutions, an expert guide has been prepared: Why it is worth buying used gearboxes and engines – facts instead of myths. This is a practical supplement to the information when planning a repair or engine replacement in a BMW.