BMW 1 Series E81 E87 LCI 123d Bare Engine N47S N47D20B 204HP New Timing 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 1 Series E81 E87 LCI 123d Bare Engine N47S N47D20B 204HP New Timing WARRANTY is a complete powertrain unit from the N47 family, designed for compact 1 Series models. This four-cylinder diesel unit provides dynamic yet economical performance, and the new timing chain significantly increases operational safety and reduces the risk of costly repairs. This is an ideal choice for users looking for a technically refined diesel engine for their BMW.

Specifications and technical data

• SKU: 2146547-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2146547
• Substitutable numbers: 11002146547, 2146547, 11000433019, 0433019, 11002146548, 2146548
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the N47S / N47D20B engine

The presented engine belongs to the Engines category and represents a modern BMW diesel design. The four-cylinder layout provides a favorable compromise between weight, refinement, and performance, which translates into responsive acceleration and stable operation across the entire rev range. The unit has been designed for precise injection control and efficient fuel utilization, which is particularly important in daily city and highway driving.

The diesel engine in the 123d series is known for its high thermodynamic efficiency, allowing for good flexibility while maintaining reasonable fuel consumption. The four-cylinder architecture promotes even loading of the crankshaft and piston system and facilitates maintenance compared to more complex multi-cylinder units.

New timing chain – a key element of reliability

In engines from the N47 family, the condition of the timing system is particularly important. This unit features a new timing chain, which significantly reduces the risk of failures associated with the chain, tensioners, and guides. For the user, this means a significantly higher level of operational safety for the powertrain and the ability to operate the vehicle for longer without the need for intervention in this critical area.

A new timing chain also ensures better valve timing stability, which translates into consistent engine performance, proper cylinder filling, and more predictable vehicle behavior under various load conditions. This is especially important during dynamic driving, where precise valve control affects throttle response and overall engine refinement.

Mileage and operational condition

The unit comes from a vehicle with moderate mileage, which, combined with the replaced timing system, makes it an attractive solution for those planning long-term operation. Used condition means that the engine has been in service, but it retains full structural functionality, and key components have been verified for further use.

This combination – a unit from real-world operation and a freshly performed timing service – is beneficial both economically and technically. It allows for the installation of the engine as a replacement for a worn or damaged unit without the need for immediate, costly work on the timing system.

Application in BMW E81 / E87 123d and parts selection

The engine was designed for installation in BMW 1 Series E81 and E87 models in the 123d version, where it provides dynamic and economical propulsion. Thanks to a design compliant with manufacturer standards, it is possible to maintain factory handling characteristics, proper cooperation with vehicle electronics, and the drivetrain.

When selecting a powertrain unit, it is worth paying attention to the compatibility of engine codes, fuel type, and cylinder configuration with the vehicle's factory specifications. The product has an assigned OEM part number and interchangeable numbers, which facilitates compatibility verification in service catalogs and parts selection systems, without the need to experiment with unreliable replacements.

Technical support and additional materials

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 long blocks, check out the available parts in the BMW Engines category.

For users interested in a broader context of BMW engine operation, including potential design weaknesses and repair costs, the following guide article may be useful: Troublesome BMW E90 engines: check what can ruin your budget!. It allows you to better understand how proper selection and maintenance of the engine affect the total cost of vehicle ownership.

Summary

BMW 1 Series E81 E87 LCI 123d Bare Engine N47S N47D20B 204HP New Timing WARRANTY is a proposal for drivers who expect a proven diesel powertrain from the N47 family, prepared for further operation. The four-cylinder diesel design, combined with a new timing system, provides favorable conditions for installation in place of a worn engine, reducing the risk of typical faults and supporting stable, predictable vehicle performance in daily use.