BMW E81 E87 E90 118i 318i 116i 2.0 N43 Bare Engine N43B20AY 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 E81 E87 E90 118i 318i 116i 2.0 N43 Bare Engine is an original powertrain unit from the N43 family, designed for 1 Series and 3 Series models. This four-cylinder petrol engine provides the characteristic BMW refinement and precise throttle response, and the low mileage in this configuration makes it an attractive base for replacing or repairing the drivetrain. It is a solution for users looking for a proven, used component with maintained functionality.

Specifications and technical data

• SKU: 0427103-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0427103
• Substitutable numbers: 11000427103, 0427103, 11000427104, 0427104, 116i316i122HP, N43B20A, N43, N43B20
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Purpose and compatibility with BMW models

The presented engine belongs to the Engines category and has been designed to work with popular BMW E81, E87, and E90 LCI models in 118i and 318i versions. The N43 family unit is structurally matched to the architecture of these bodies, which facilitates installation in place of the factory-fitted engine without the need for interference with the vehicle's basic mechanical components.

The N43B20AY petrol engine is particularly appreciated by users for its modern design and good balance between performance and fuel consumption. Thanks to this, it will work well both in daily urban operation and in calm extra-urban driving, maintaining the typical BMW operating characteristics.

Technical characteristics of the N43 unit

The N43 powertrain used in this product is a petrol engine with four cylinders in an inline layout. This configuration ensures good refinement, predictable behavior under load, and simpler maintenance compared to more complex multi-cylinder systems.

The N43 family engine was developed with modern emission and efficiency requirements in mind, which translates into favorable performance parameters. The use of four cylinders allows for a balanced compromise between dynamics and economy, as well as a reduction in the weight of the powertrain, which positively affects the vehicle's handling.

Condition, mileage, and use in repairs

The offered engine is in used condition, which means it comes from an operated vehicle but retains full suitability for further use after proper installation and basic workshop verification. The declared mileage of the unit is important information when planning long-term operation – it allows you to assess the potential for further engine operation compared to other solutions available on the market.

This type of used petrol engine is particularly useful in situations where the existing unit in the vehicle has suffered a major mechanical failure or a fault that is economically unviable to repair. Replacing the complete powertrain with a proven, used unit often allows for significant cost savings compared to purchasing a new engine or extensive refurbishment.

Benefits of choosing a used BMW N43 engine

Purchasing a used N43 family engine for a BMW E81, E87, or E90 LCI brings a number of practical benefits:

• the possibility of restoring the vehicle to full efficiency at controlled investment costs,
• maintaining the original handling characteristics and operation of the BMW powertrain,
• easier matching to the existing vehicle installation thanks to structural compatibility,
• reduction of vehicle downtime in the workshop compared to extensive repair of an old engine.

For many users, it is also important that choosing a used engine allows for more flexible planning of repair budgets, while maintaining high vehicle functionality. The four-cylinder N43 petrol engine remains a proven solution in this class of cars.

Selection by numbers and professional support

When selecting a powertrain, it is crucial to verify compatibility by part numbers and interchangeable numbers, as well as to compare the specifications with the original engine installed in the vehicle. Proper identification by VIN and manufacturer numbers minimizes the risk of incompatibility and additional installation costs.

To better understand the differences between new and used powertrains and to learn about the procedures for selection by VIN and OEM, it is worth reading the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses the practical aspects of purchasing used engines and gearboxes.

Related BMW Engines – expansion and modernization

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other elements from the same group, such as additional powertrains, engine blocks, or complete drive units, check the available parts in the BMW Engines category.