BMW F70 M135iX F74 M235iX X1 U11 M35iX Bare Engine B48A20H B48R 4k, 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 F70 M135iX F74 M235iX X1 U11 M35iX Bare Engine B48A20H B48R 4k, WARRANTY is a modern, gasoline engine block from the B48 family, designed for current, dynamic BMW models with xDrive all-wheel drive. This bare unit provides a solid foundation for professional replacement or conversion, allowing for precise matching of accessories to the specific vehicle configuration. Thanks to its very low mileage and advanced four-cylinder design, the engine ensures high operational potential and stable performance parameters.

Specifications and technical data

• SKU: 5A84230
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A84230
• Substitutable numbers: 5A84230, 11005A84230
• Fuel type: Petrol
• Number of cylinders: 4
• Part type: Engine Long Block
• Category: Engines
• Engine code: B48A20H B48R
• Mileage: 4 000

Technical characteristics of the B48A20H B48R engine block

The presented engine block belongs to the family of modern, four-cylinder gasoline units from BMW, optimized for efficiency, refinement, and compatibility with all-wheel drive systems. The design of the block and cylinder head has been engineered for high power density while maintaining appropriate rigidity and thermal stability, which is crucial both in everyday driving and under higher loads.

A bare engine block means that the user or workshop can transfer existing accessories (fuel system, turbocharger, auxiliary components) from the previous unit, maintaining full control over the configuration. This solution is particularly beneficial for post-accident repairs, replacements after mechanical failure, or modernization projects where compliance with factory electronics and vehicle installation is essential.

Application in BMW models and modernization potential

The B48A20H B48R engine block is used in the new generation of compact and mid-size BMW models with xDrive, such as the sporty 1 and 2 Series versions and the X1 SUV in the M Performance variant. This type of unit is designed for dynamic driving, stable power delivery, and integration with advanced automatic transmissions and traction systems.

In practice, this means the engine performs very well both in stock configurations and in projects where software modifications or slight power increases are planned. The low mileage of the block serves as a favorable starting point for further operation, reducing the risk of typical mechanical wear that appears at higher mileages.

Benefits of choosing a used engine block

Choosing a used engine block from a modern BMW gasoline unit is a solution that allows for a significant reduction in repair costs compared to purchasing a brand-new unit, while maintaining a high level of safety and functionality. In the case of a bare block, it is particularly important that it allows for:

• the use of existing, proven accessories from the previous engine,
• easier maintenance of full compatibility with the factory ECU and electrical installation,
• greater flexibility when planning repairs or drivetrain upgrades.

For workshops specializing in the BMW brand, such a block is a convenient base for a professional engine rebuild, and for the end user – a chance to restore full vehicle performance on a reasonable budget.

Selection by VIN/OEM and technical aspects of installation

When selecting an engine block, it is crucial to verify the compatibility of the engine code and vehicle configuration (drivetrain, model generation, model year). In practice, this means checking data via VIN and part numbers to avoid differences in mounts, oil channels, or accessory compatibility. Professional installation includes, among other things, checking the lubrication system, cooling system, and properly preparing the contact surfaces of the head and block if components from the previous unit are being transferred.

To better understand how to safely choose used power units and what the selection process via VIN and OEM numbers looks like, it is worth reading our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The article discusses key procedures, common myths, and cost ratios compared to new components.

BMW engines – expansion of the offer and further project development

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

For users interested in the broader context of BMW engine operation, including potential weak points of older designs, the following material may also be helpful: Troublesome BMW E90 engines: check what can ruin your budget!. It allows for a better assessment of the differences between engine generations and helps in planning investments in the drivetrain consciously.