BMW E81 E87 E90 118d 120d 318d 320d N47 Bare Engine N47D20A w 26k miles 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 E81 E87 E90 118d 120d 318d 320d N47 Bare Engine designed for BMW 1 and 3 series diesel models is a solution for users looking for a professional base for an engine overhaul or replacement. The offered engine block comes from the modern BMW diesel engine family, and its configuration provides a good balance between performance and economy. By limiting the equipment to a bare block with a cylinder head, it serves as a practical foundation for further assembly with accessories from your vehicle.

Specifications and technical data

• SKU: 2146549-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2146549
• Substitutable numbers: 11002146549, 2146549, 11000433009, 0433009, 11000427824, 0427824, 11000441287, 0441287, 11002146550, 2146550, 11000433010, 0433010, 11000427825, 0427825, 11000441289, 0441289
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Engine code: N47D20A
• Mileage: 26 000

Purpose and compatibility

The N47D20A base engine was designed for popular diesel-powered BMW models, such as the BMW 1 Series (E81, E87) and 3 Series (E90) in 118d, 120d, 318d, and 320d versions. The design of this unit is optimized for daily operation, ensuring proper flexibility across the entire rev range and efficient acceleration while maintaining reasonable fuel consumption.

The offered item is a bare engine block, which means it serves as a base for transferring accessories from your current engine (e.g., fuel system, turbocharging, auxiliary equipment). This solution is cost-effective and allows you to maintain compatibility with the factory equipment of your specific vehicle.

Construction and technical parameters

The N47D20A unit belongs to the modern family of BMW four-cylinder diesel engines. The cylinder layout has been optimized for smooth operation and efficient use of space in the engine bay, which facilitates service and installation in compact and mid-range bodies.

The engine operates on diesel fuel, which translates into high thermal efficiency and favorable fuel consumption for both city and highway driving. The four cylinders provide a balance between unit weight, dynamics, and durability, which is important for both fleet drivers and private users.

The offered engine has a mileage limited to a value typical for units in the early stage of operation, which provides a solid starting point for further engine performance after proper installation and service maintenance.

Practical application and installation advantages

The N47D20A bare engine is particularly recommended in situations where the current unit has suffered a major mechanical failure or requires an uneconomical repair. Using this block allows you to:

• restore the efficiency of the drive using existing accessories,
• maintain an equipment configuration consistent with the vehicle's factory VIN,
• reduce costs compared to purchasing a complete engine with full accessories.

For workshops and services specializing in the BMW brand, this is a functional base for professional repair, enabling precise matching of all auxiliary components. The unit works well both in cars used daily and in fleet vehicles, where predictability and repeatability of operating parameters are important.

Condition, verification, and selection by numbers

The engine comes from the Engines category and is offered as a used part, which allows for a significant reduction in repair costs compared to a brand-new unit. Before installation, a standard preparation procedure is recommended, including checking seals, measuring compression, and verifying the accessories that will be transferred from the previous engine.

To minimize the risk of error during selection, it is worth using the OEM number and interchangeable numbers assigned to this model, as well as data from the vehicle's VIN. A detailed discussion of selection procedures and the benefits of purchasing used power units can be found in the expert article Why it is worth buying used gearboxes and engines – facts instead of myths, which explains step-by-step how to safely plan such an investment.

Expansion of upgrades within the BMW drive system

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