BMW F20 F21 125i F30 F31 330i F32 F36 430i B48 Complete Engine B48B20B 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 F20 F21 125i F30 F31 330i F32 F36 430i B48 Complete Engine B48B20B WARRANTY is a modern power unit from the B48 family, designed for popular 1, 3, and 4 Series models. The engine belongs to the Engines category and is an attractive solution for users looking for a proven gasoline powertrain with a compact design and high operational refinement. Thanks to the well-thought-out construction of the four-cylinder B48 unit, you gain a solid foundation for repairing or replacing the drivetrain in your BMW.

Specifications and technical data

• SKU: 2455353-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2455353
• Substitutable numbers: 2455353, 11002455353, 2444023, 11002444023, 11002455354, 2455354
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 54542

Technical characteristics of the B48B20B engine

The presented B48B20B engine is a four-cylinder, inline gasoline unit used in BMW F20 125i, F30 330i, and F32 430i models. It belongs to the new generation of BMW modular engines, which translates into a compact design, optimized weight, and favorable performance parameters across the entire rev range. The use of a uniform B48 architecture facilitates servicing, the selection of accessories, and integration with the vehicle's factory electronics.

The engine was designed with dynamic yet economical driving in mind. Four cylinders provide a balanced compromise between performance and fuel consumption, and the modern construction promotes stable operation both in city traffic and at higher highway speeds.

Application in BMW F20, F30, F32 models

The B48B20B unit is dedicated to specific versions of BMW F-series models, such as the F20 125i, F30 330i, and F32 430i. As a result, it serves as the proper base for replacing a damaged engine in cars with this powertrain designation. Maintaining compatibility of the generation and engine family allows for the preservation of the vehicle's factory parameters without the need for interference with the body structure or the drivetrain.

In practice, this means that with proper selection based on the engine code and verification of additional equipment, the installation of this unit can proceed in an orderly and predictable manner. This is particularly important in the case of modern BMWs, where integration with electronics and control systems is crucial for the proper operation of the entire powertrain.

Condition, mileage, and benefits of choosing a used engine

The engine comes from the secondary market, which allows for a significant reduction in repair costs compared to a brand-new unit. The moderate mileage indicates a limited degree of wear relative to typical values found in this class of vehicles, which is a significant advantage when planning long-term use. Choosing a used engine with documented origin is a reasonable compromise between price and functionality.

For many BMW F-series users, purchasing a complete, used power unit is a viable alternative to a costly major overhaul. A properly selected B48B20B engine allows for restoring the vehicle's full performance while maintaining operating characteristics consistent with the manufacturer's factory specifications.

Selection by engine code and technical parameters

To correctly match this engine to a specific BMW vehicle, it is crucial to verify the power unit code, body generation, and accessory configuration. In practice, selection is based on the OEM number or interchangeable numbers, as well as data from the VIN system. This approach minimizes the risk of mechanical or electronic incompatibility and facilitates the installation process in the workshop.

If you need a broader discussion of the procedures for selecting used power units, the differences between individual variants, and cost-effectiveness calculations, it is worth checking out the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which details the practical aspects of purchasing such components.

Expert support when buying a used engine

Purchasing a used engine for a modern BMW requires an informed decision and knowledge of the basic criteria for evaluating a power unit. It is worth paying attention to the mileage, code compatibility, and service history. For users who want to organize the entire process step by step, the practical guide how to buy a used car engine and not get scammed will be helpful, describing, among other things, how to recognize signs of wear and typical pitfalls of the secondary market.

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