BMW 1 Series E81 E82 E87 LCI 123D Diesel Bare Engine N47S N47D20B 204HP 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 E82 E87 LCI 123D Diesel Bare Engine N47S N47D20B 204HP WARRANTY is a factory-spec diesel powertrain from the N47 family, designed for compact 1 Series models. A used engine from this series, when properly maintained, provides dynamic performance, high operating refinement, and favorable fuel economy. This is the ideal solution for drivers looking for a technically compatible OEM replacement instead of costly overhauls or purchasing a brand-new unit.

Specifications and technical data

• SKU: 2146547
• 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 204HP unit

The presented engine belongs to the Engines category and is designed for BMW 1 Series models: E81, E82, E87, and E88 in the 123d version. The diesel unit from the N47S N47D20B family with 204 HP is a modern four-cylinder construction, designed to combine distinct flexibility with low fuel consumption. The four-cylinder configuration promotes a compact design, and the use of diesel fuel allows for high torque across a wide rev range.

The engine is suitable for users expecting a proven, stock BMW powertrain that retains factory mounting points, fuel system, and compatibility with the vehicle's original electronics (ECU, wiring harness, accessories – according to the specific car configuration). As a result, it provides a solid foundation for replacing a damaged powertrain without the need for modifications to the body structure or drivetrain.

Application in BMW E81, E82, E87, E88 123d

The N47S N47D20B 204HP engine was developed specifically for the 123d version in the 1 Series hatchback and convertible bodies. This ensures:

• compatibility with factory engine bay mounts,
• adaptation to stock cooling and intake systems,
• compatibility with original transmissions used in these models,
• retention of the power and torque characteristics specified by the manufacturer.

For workshops and end-users, this means reduced installation time and a lower risk of compatibility issues. In practice, this is particularly important when replacing a unit after a mechanical failure or due to high wear of the existing engine.

Benefits of choosing a used BMW Diesel engine

Choosing a used BMW diesel engine from the N47 family is a solution that significantly lowers repair costs compared to purchasing a factory-new unit. At the same time, the original manufacturer's specification is maintained, which facilitates diagnostics, service, and future vehicle resale. The moderate mileage of this unit translates into a favorable price-to-potential-lifespan ratio, provided that recommended service procedures (oil changes, filters, cooling system checks) are followed after installation.

A diesel-powered engine is particularly attractive for drivers covering higher annual mileages, where driving economy and high efficiency under highway loads are prioritized. The four-cylinder design provides a good balance between unit weight, fuel consumption, and performance, which works well for both daily city driving and long-distance travel.

Selection by OEM and VIN – technical support

Before purchasing, it is recommended to verify the engine's compatibility with the specific vehicle equipment version based on the VIN and OEM part number. This helps avoid issues with the compatibility of accessories, the engine control unit, or the electrical harness. If in doubt, it is worth seeking advice from a specialized workshop or a technical advisor who can compare the unit's parameters with the configuration of the specific BMW 1 Series vehicle.

For those who want to better understand the differences between new and used powertrains, the VIN selection process, and real operating costs, our expert guide will be helpful: Why it is worth buying used transmissions and engines – facts instead of myths. The article discusses, among other things, verification procedures, common myths, and repair cost ratios relative to vehicle value.

BMW Engines – expansion and powertrain modernization

If you are planning a comprehensive repair or modernization 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.

This allows you to select consistent powertrain components in one place, which simplifies repair logistics and helps maintain a uniform technical specification for the entire assembly. This is particularly important for larger service projects, such as powertrain replacement, major overhauls, or vehicle modernization for further fleet operation.