BMW F30 F31 320iX F32 F36 420iX B48 Bare Engine B48B20A with 79k 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.).

BMW F30 F31 320iX F32 F36 420iX B48 Bare Engine B48B20A with 79k miles, WARRANTY is a used, original bare engine block from the B48 family, designed for modern BMW all-wheel-drive models. This is a solution for users who want to restore the full performance of the drivetrain while maintaining the factory engine characteristics. Thanks to its four-cylinder configuration and gasoline power, it provides a solid base for further assembly with auxiliary components.

Specifications and technical data

• SKU: 2455344
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2455344
• Substitutable numbers: 2455344, 11002455344, 11002455343, 2455343, 11002409356, 2409356
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: A

Purpose and compatibility

The presented bare engine is dedicated to popular 3 and 4 series models, such as the BMW F30, F31 LCI, F32, F34, and F36 in 320iX and 420iX versions. The design, based on a modern four-cylinder gasoline engine, allows for maintaining proper dynamics, smooth operation, and the characteristic BMW driving experience. This type of bare engine is suitable both for standard replacement of a worn-out unit and for post-accident repairs where it is necessary to replace the block and cylinder head without the complete auxiliary equipment.

Construction and technical characteristics

The B48B20A engine in the form of a bare block includes the essential core of the powertrain, serving as a base for transferring existing components from the previous engine. The four-cylinder gasoline layout provides a favorable compromise between performance and fuel consumption, as well as good flexibility in typical road conditions. This configuration is particularly valued in modern BMWs for its predictable throttle response and stable operation across the entire rev range.

Thanks to its compact design, the bare engine works well with the xDrive system, which is important for maintaining proper vehicle balance and correct interaction with the drivetrain. The used nature of the item allows for an economical rebuild of the powertrain while maintaining the manufacturer's original specifications.

Application in service practice

The B48B20A bare engine is particularly useful in situations where the block, cylinder head, or internal engine components have been damaged, while the auxiliary equipment (turbo, injectors, manifolds, wiring harness, auxiliary units) can be transferred from the existing engine. Such a solution:

• simplifies the repair process in professional workshops specializing in BMW,
• allows for maintaining compliance with the vehicle's factory configuration,
• reduces costs compared to purchasing a complete unit.

For users planning long-term vehicle operation, replacing the engine with a functional used unit is often a reasonable compromise between cost and repair durability.

Benefits of using an original BMW bare engine

Using an original B48 family bare engine in F30, F31 LCI, F32, F34, and F36 models allows for maintaining the factory performance parameters of the powertrain and compatibility with the vehicle's electronics. This is particularly important in modern designs, where engine control units, safety systems, and the xDrive system are tightly integrated. Choosing this solution minimizes the risk of adaptation issues and reduces the need for additional modifications.

To better understand the importance of proper engine selection in BMW cars and the potential consequences of improper repairs, it is worth reading a practical guide on problematic units in the E90 series: Troublesome BMW E90 engines – a guide before costly repairs.

BMW engines – further expansion and parts selection

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 engine units, check out the available parts in the BMW Engines category.