BMW F20 125i F30 320i 328i 420i 428i Petrol N20 Complete Engine N20B20A 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 125i F30 320i 328i 420i 428i Petrol N20 Complete Engine N20B20A WARRANTY is a complete, four-cylinder powertrain from the N20 family, designed for modern BMW models with petrol engines. This unit is an ideal replacement for the factory engine in 1, 3, and 4 Series vehicles, ensuring structural consistency with the original vehicle configuration. Thanks to the complete nature of the engine assembly, it provides a solid foundation for professional repairs or powertrain replacement.

Specifications and technical data

• SKU: 2420306-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2420306
• Substitutable numbers: 11002420306, 2420306, 110022882191100230408711002420307, 1100228822011002304088, 228821923040872420307, 22882202304088, 110024203081100242030911002304156, 110022882211100230415711002288222, 242030824203092304156, 228822123041572288222
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 39 000

Technical characteristics of the N20B20A engine

The offered engine belongs to the family of modern, turbocharged BMW N20 petrol units, designed to combine dynamic performance with reasonable fuel efficiency. The four-cylinder construction ensures a good balance between refinement and the weight of the powertrain, which translates into favorable driving characteristics in light and medium-sized BMW models.

The N20B20A petrol unit was used in many popular power configurations across F-series models, which facilitates the selection of appropriate controls and accessories for a specific vehicle version. The engine is adapted to work with modern automatic and manual transmissions, and its architecture allows for the retention of the factory mounting layout in the engine bay.

Application in BMW F20, F30 and 4 Series models

The N20B20A complete engine is intended for use in models such as the BMW F20 125i, F30 320i and 328i, as well as the 4 Series coupe and gran coupe versions – 420i and 428i. As a result, it serves as a universal base for powertrain replacement across a wide range of body styles, while maintaining compatibility with factory mounting points and the drivetrain.

In practice, this means the possibility of performing an engine swap while maintaining the original vehicle handling characteristics, without the need for bodywork modifications. For workshops specializing in the BMW brand, this is a solution that facilitates repair planning, and for the user – an opportunity to restore full vehicle functionality while maintaining the correct type of powertrain.

Condition, mileage and suitability for professional repairs

The engine comes from the category of used powertrains, which allows for a significant reduction in the cost of comprehensive repairs compared to purchasing a brand-new unit. The declared mileage is relatively low for this generation of engines, which increases its attractiveness as a base for further operation or potential refurbishment according to the standards of a given workshop.

For service centers and mechanics specializing in the BMW brand, it is also important that the unit retains the characteristics of the original engine factory-fitted in the listed models. This facilitates the selection of appropriate ECU software, accessory configuration, and subsequent diagnostics, which is significant both in daily operation and during potential inspections.

Benefits of choosing a complete BMW N20 engine

Choosing a complete N20 family engine for the BMW F20, F30, and 4 Series is a solution that allows you to:

• maintain structural consistency with the factory powertrain,
• reduce assembly time due to compatibility with original mounting points,
• maintain the correct operating characteristics of the petrol unit in a given model,
• optimize repair costs by using a used complete engine.

For users looking to get their car back on the road efficiently, this is a practical solution that combines technical correctness with a reasonable service budget. The Engines category for this product means that we are dealing with a full powertrain, not a single accessory component.

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 powertrains, check the available parts in the BMW Engines category.

Technical support and knowledge about BMW units

When selecting a used engine for a specific BMW model, it is crucial to understand the differences between individual generations of powertrains and their typical issues. In the case of older series, such as the E90, some petrol and diesel engines are known for increased failure rates, which directly impacts service costs. To better understand how to properly select a powertrain and what to avoid when purchasing, it is worth reading the material: Faulty BMW E90 engines: check what can ruin your budget!.

Rising labor costs and the price of new parts mean that more drivers and workshops are opting for used OEM powertrains. How to do this sensibly and safely is described in the article: Rising repair costs and the boom in used parts – how to save on car service?, which can provide a practical supplement to your knowledge when planning an engine replacement in a BMW.