BMW 1 Series E81 E87 LCI 123d Complete Engine N47S N47D20B New Timing WARRANTY

BMW 1 Series E81 E87 LCI 123d Complete Engine N47S N47D20B New Timing WARRANTY is a factory-spec direct-injection diesel unit designed for facelifted 1 Series models. This is the ideal solution for users looking for a proven, complete engine block with a new timing chain, allowing you to restore the full performance of your drivetrain without the high costs of rebuilding an old engine.

Specifications and technical data

• SKU: 2146547-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2146547
• Substitutable numbers: 11002146547, 2146547, 11000433019, 0433019, 11002146548, 2146548, 11000433020, 0433020
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical specifications of the N47S N47D20B engine

The offered unit belongs to the Engines category and is intended for installation in the BMW 1 Series E81/E87 LCI 123d diesel version. The four-cylinder diesel design provides an excellent balance between performance and fuel economy, while the new timing system eliminates the common operational issues associated with this generation of N47 units.

The engine is complete, which facilitates the transfer of accessories and integration with the vehicle's existing systems. This makes it a practical solution for major failures, such as mechanical damage to the block or the crankshaft-piston system.

Purpose and application in the BMW 123d

The N47S N47D20B engine was designed specifically for the BMW 1 Series E81/E87 LCI 123d, ensuring full structural compatibility with factory mounting points, the drivetrain, and the vehicle's control electronics. The unit is suitable both for replacement after a failure and for professional vehicle restoration following a collision.

By maintaining original BMW specifications, the installation process is predictable for the workshop – with no need for structural modifications or mounting adaptations. This is crucial for long-term durability and future serviceability.

Condition, mileage, and benefits of choosing a used engine

The offered engine is used, which significantly reduces repair costs compared to purchasing a brand-new unit. The declared mileage is low for this type of construction, which translates into less wear on internal components and better potential for continued operation.

The new timing chain in this unit is a key advantage – it eliminates the need for immediate replacement after installation while increasing the engine's operational safety in the long run. For the workshop, this means less additional work, and for the user, it reduces the risk of costly failures related to the timing system.

Selection by part numbers and technical support

The engine has an original OEM part number and assigned interchangeable numbers, which facilitates precise identification and selection for a specific vehicle. Before purchasing, it is recommended to verify compatibility using the VIN and factory markings to ensure full integration with the electronics and accessories of your BMW.

For users who want to better understand the differences between individual power units and the procedures for selection by VIN and OEM, our expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article explains, among other things, cost-effectiveness, condition verification, and common mistakes when purchasing used drivetrain components.

Expansion and modernization of the BMW drivetrain

If you are planning a comprehensive repair or upgrade of your BMW's engine area and need other components from the same group, such as cylinder heads, blocks, or complete power units, check out the available parts in the BMW Engines category.

Choosing a complete engine with a new timing chain is a particularly beneficial solution for major engine damage, where rebuilding the old engine is uneconomical or technically difficult. This type of replacement allows you to restore the car's full functionality while maintaining the driving characteristics typical of the BMW 123d diesel.