BMW F20 F30 F32 120i 320i 420i B48 Complete Engine B48B20A 37k miles, 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 F30 F32 120i 320i 420i B48 Complete Engine designed for the F20, F30, and F32 series models with 120i, 320i, and 420i units is an attractive solution for drivers looking for a proven, used gasoline powertrain. Thanks to the preservation of the factory configuration and the four-cylinder design, the engine provides modern performance characteristics and high driving refinement. This is a proposal for users who want to restore the full efficiency of the drivetrain without investing in a brand-new unit.

Specifications and technical data

• SKU: 2455340-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2455340
• Substitutable numbers: 11002455340, 2455340, 11002408212, 2408212, 11002455342, 2455342
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Application and compatibility with BMW models

The offered BMW F20 F30 F32 120i 320i 420i B48 Complete Engine was designed for the BMW F20, F30, and F32 platforms in 120i, 320i, and 420i versions. The unit belongs to the modern B48 family, which means optimized efficiency, good flexibility across the entire rev range, and a fit tailored to the character of BMW's compact and mid-size models. The four-cylinder layout allows for a balance between performance and reasonable fuel consumption, and the design, consistent with factory standards, facilitates installation in place of a worn or damaged engine.

Construction and technical characteristics

The engine belongs to the Engines category and represents BMW's modern approach to gasoline units. Four cylinders working in an inline layout ensure smooth power delivery and predictable throttle response. The use of gasoline allows for dynamic characteristics that work well with both daily use and more demanding highway driving.

The unit is complete, which in practice means the possibility of preparing the car for operation while limiting additional adaptation tasks on the mechanic's side. Thanks to this, the engine will work well both for a standard replacement of a damaged unit and for more extensive service or modernization projects within the drivetrain.

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 declared mileage is typical for modern BMW gasoline engines and leaves an operational reserve with proper service maintenance after installation. Choosing a used engine from this series is particularly beneficial for users who want to:

• reduce repair costs while maintaining compliance with BMW factory specifications,
• preserve the original driving character of the 120i, 320i, and 420i models,
• shorten vehicle downtime thanks to a complete, ready-to-install unit.

An additional advantage is the presence of a warranty, which provides investment security and confirms that the engine has been verified for basic performance parameters before being offered for sale.

Professional selection and verification via VIN/OEM

To ensure proper fitment for a specific BMW vehicle, it is crucial to check compatibility using factory numbers and vehicle data (VIN). The offered unit has an assigned OEM part number and interchangeable numbers, which facilitates workshop work and minimizes the risk of errors during selection. In practice, this means a faster ordering process, more efficient installation, and a lower risk of additional costs associated with component mismatch.

If you want to better understand the differences between original parts, replacements, and used components, as well as their long-term cost-effectiveness, it is worth reading the guide: original, replacement, or used car parts – what to choose.

BMW Engines – additional information and materials

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 blocks, cylinder heads, or engine accessories, check the available parts in the BMW Engines category.

When planning major service work on cars of this brand, it is also worth knowing the typical weak points of individual generations. A good starting point may be an article describing problematic power units in the popular 3 Series model: faulty BMW E90 engines – what to watch out for when buying and operating. This will allow you to better assess how important proper service maintenance and the selection of the right unit are during replacement.