Engine N20B20B BMW F30 F31 F32 320iX 420iX Petrol N20 Complete Engine 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.

Engine N20B20B BMW F30 F31 F32 320iX 420iX Petrol N20 Complete Engine WARRANTY is an original power unit from the N20 family, designed for BMW models with xDrive all-wheel drive. This used petrol engine from this series is an attractive solution for drivers looking for a technically advanced yet cost-effective engine block for professional repair or replacement. Thanks to its verified mileage and factory specifications, it provides a solid foundation for further service work.

Specifications and technical data

• SKU: 2420321-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2420321
• Substitutable numbers: 11002420321, 2420321, 11002420322, 2420322, 11002288240, 2288240, 11002349220, 2349220, 11002349221, 2349221, 11002288241, 2288241
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 53000

Technical characteristics of the N20B20B engine

The presented engine belongs to the modern N20 family of units, designed as compact, four-cylinder petrol constructions. The use of four cylinders in an inline layout allows for a favorable compromise between dynamics and smooth operation, while simultaneously reducing the weight of the powertrain. The unit was developed for compatibility with the xDrive all-wheel-drive system, which translates into correct mounting points and compatibility with accessories typical for the F30, F31, and F32 series.

Application in BMW F30, F31, F32 320iX and 420iX models

The N20B20B engine is dedicated to popular mid-size BMW models – the 3 Series (F30, F31) and 4 Series (F32) in 320iX and 420iX versions. This means it is structurally adapted to the body architecture of these generations, including the engine bay, cooling system, and xDrive drivetrain. As a result, it serves as the proper base for replacing a unit in vehicles factory-equipped with the N20 engine, without the need for structural body modifications or changes to basic mounting solutions.

Operational parameters and condition

The unit comes from the Engines category and is offered as a used component, which allows for a significant reduction in repair costs compared to purchasing a new powertrain. The maintained mileage provides a good basis for further operation after performing standard service procedures, such as changing oil, filters, or checking seals. The engine runs on petrol, which is important when selecting the appropriate fuel supply system and engine control unit for the vehicle.

Selection by OEM and interchangeable numbers

The offered engine has an assigned OEM part number and associated interchangeable numbers, which facilitates precise identification of the unit in BMW catalogs and service systems. This makes it possible to professionally match the engine to a specific vehicle based on the VIN and technical documentation, minimizing the risk of assembly incompatibility. If necessary, compatibility with existing accessories, the transmission, and the vehicle's electrical harness can be verified.

Benefits of choosing a used BMW engine

Purchasing a used N20 family engine for a BMW F30, F31, or F32 is a solution that allows you to combine reasonable costs with the preservation of factory driving characteristics. By choosing an original unit from the same model series, you gain:

• preservation of factory dynamics and engine performance characteristics,
• compatibility with the existing drivetrain and control systems,
• the ability to use original accessories,
• reduction of vehicle downtime during repairs.

For users who want to better understand the specifics of the second-hand parts market, VIN-based selection procedures, and real cost differences, the expert guide Why it is worth buying used transmissions and engines – facts instead of myths, which describes step-by-step how to safely choose used power units, will be helpful.

Expanding BMW engine repairs

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 out the available parts in the BMW Engines category.