BMW F40 M135iX F44 M235iX X2 F39 M35iX Bare Engine B48A20E B48E 25k, 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 F40 M135iX F44 M235iX X2 F39 M35iX Bare Engine B48A20E B48E 25k, WARRANTY is a petrol, four-cylinder engine block from the B48 family, designed for modern, sporty BMW models with xDrive. This is a solution for users looking for a technically advanced powertrain unit with very low mileage, which allows for professional repair or drivetrain conversion. Thanks to its bare engine block design, it serves as a solid base for further assembly with accessories compatible with the specific vehicle's requirements.

Specifications and technical data

• SKU: 5A07793-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A07793
• Substitutable numbers: 5A07793, 11005A07793
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Engine code: B48A20E
• Mileage: 3 000

Technical characteristics of the B48A20E engine block

The presented engine block belongs to the modern BMW B48 engine family, designed for high efficiency, smooth operation, and compliance with current emission standards. The four-cylinder layout combined with petrol injection ensures a good balance between dynamics and efficiency, which is particularly important in M Performance versions, such as the M135iX, M235iX, or X2 M35iX.

A bare engine block means it serves as the primary structural foundation of the powertrain, prepared for the transfer or installation of accessories from the existing engine. This configuration is often chosen by professional workshops because it allows for precise matching of auxiliary equipment to the specific car specification, while maintaining consistency with the factory powertrain architecture.

Application in BMW M Performance models

The B48A20E engine in the configuration described as a bare engine is dedicated to the sporty versions of the BMW F40, F44, and X2 F39 series, where fast throttle response, stable operation under load, and the ability of the xDrive drivetrain to handle high torque are essential. This type of unit is particularly useful in situations where the previous engine has suffered major mechanical or thermal damage, and repairing the block is not cost-effective.

In practice, such an engine block will work well both for standard unit replacement and for more advanced modernization projects, where maintaining compatibility with the factory engine code is crucial. This helps reduce the risk of issues with the control electronics, wiring harness, and drivetrain system.

Benefits of choosing a used engine block

Choosing a used engine block from the B48 family is a solution that allows for a significant reduction in repair costs compared to purchasing a complete, new unit. At the same time, the ability to use existing accessories is maintained, which facilitates integration with the car and shortens workshop turnaround time. The very low mileage of this unit translates into limited wear of internal components, which is a significant advantage when planning long-term operation.

For workshops specializing in the BMW brand, such an engine block is a convenient base for building a complete powertrain unit that meets customer requirements. It allows for a flexible approach to accessory configuration while maintaining the factory geometry and base parameters of the engine.

Professional fitting and compatibility verification

To maximize the potential of this unit, professional fitting of the engine block to the specific vehicle is recommended, taking into account the equipment version, drivetrain type, and the engine control unit used. The workshop performing the installation should pay attention to engine code compatibility, fuel system architecture, and cooling and lubrication requirements.

If necessary, you can refer to manufacturer catalogs and BMW service documentation to ensure that the transferred accessories (turbo, injectors, pumps, manifolds) will work correctly with the new engine block. This approach minimizes the risk of subsequent operational problems and helps maintain consistency with the factory characteristics of the unit.

BMW engines – expansion and additional information

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

When making a decision about replacing a powertrain unit, it is worth knowing the typical problems of older designs. For comparison with earlier engine generations, you can refer to a practical guide on problematic units in the E90 series, available in the article Problematic BMW E90 engines – what can ruin your budget, which helps to consciously assess the advantages of newer design solutions.