BMW E81 E87 LCI E90 116i 2.0 118i 318i 143HP Complete Engine N43B20AY WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The warranty covers the engine itself; engine accessories are covered by a 30-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a complete engine.

The engine comes from a right-hand drive (RHD) vehicle. The wiring harness is not compatible with left-hand drive (LHD) vehicles and requires replacement or modification.

BMW E81 E87 LCI E90 116i 2.0 118i 318i 143HP Complete Engine N43B20AY WARRANTY is a complete powertrain from the N43 family, designed for popular 1 Series and 3 Series models. This is a solution for users who want to restore the full performance of their BMW engine in a technically correct and cost-effective way, using an original four-cylinder petrol design.

Specifications and technical data

• SKU: 0427103-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 427103
• Substitutable numbers: 11000427103, 0427103, 11002450323, 2450323, 11000427104, 0427104
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the N43B20AY unit

The N43B20AY engine belongs to the modern family of BMW petrol units, designed to effectively combine performance and fuel efficiency. The four-cylinder layout ensures balanced operation, and the design based on original BMW solutions guarantees compatibility with factory control systems in 118i and 318i models.

The unit is adapted for petrol fuel, which allows for maintaining the typical BMW driving culture and flexibility across the entire rev range. The four-cylinder architecture promotes stable idling and predictable behavior under load, which is important both in daily use and during dynamic driving.

Application in BMW E87 118i and E90 318i

The presented engine has been configured for installation in BMW 1 Series E87 118i and BMW 3 Series E90 318i models, which facilitates the selection of the unit when replacing a damaged engine. By maintaining the original design specifications, it is possible to use the existing electrical installation, accessories, and auxiliary systems in accordance with the manufacturer's recommendations and service procedures.

The engine as a complete powertrain is a beneficial solution in situations where repairing the existing unit is unprofitable or technically difficult. Replacing the complete engine allows for reducing vehicle downtime and limiting the risk of additional faults resulting from extensive mechanical repairs.

Benefits of choosing a complete used engine

Choosing a complete used engine for a BMW is often a more cost-effective alternative to a major overhaul of the existing unit. You receive a ready-to-use powertrain that, after proper installation and adaptation, can restore the full functionality of the vehicle while maintaining factory performance characteristics.

The N43 family engine, thanks to its design, allows for:

• maintaining the original handling characteristics typical of BMW,
• easier diagnostics and service due to the wide availability of technical data,
• the possibility of using existing service infrastructure and diagnostic tools.

An additional advantage is the fact that the unit comes from the segment of original BMW solutions, which translates into predictable behavior during long-term operation, provided that appropriate assembly and service procedures are followed.

Selection by OEM/VIN and a reliable approach to used engines

When replacing a powertrain, it is crucial to correctly match the engine to the specific vehicle configuration, taking into account the model designation, year, and equipment. In practice, this means the necessity of verifying compatibility by OEM number and VIN to ensure proper cooperation with the car's electronics and accessories.

If you want to better understand how to safely and consciously choose used powertrains, it is worth reading an expert guide discussing facts and myths about such solutions, procedures for selection by VIN/OEM, and cost analysis – you will find it in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

Additionally, if you are interested in the meaning of the OEM designation in the context of safety and durability, the material describing why used original components can be a reasonable service choice will be helpful – more information can be found in the article Quality guarantee and OEM safety – why are used original car parts the best choice for your car?.

BMW engines – expansion and modernization of the powertrain area

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 the available parts in the BMW Engines category.

Summary

BMW E81 E87 LCI E90 116i 2.0 118i 318i 143HP Complete Engine N43B20AY WARRANTY is a proposal for users who expect a technically consistent solution when replacing the engine in their 1 Series and 3 Series models. The four-cylinder, petrol design allows for maintaining the handling characteristics typical of BMW, and the complete powertrain facilitates the assembly process and subsequent operation. It is a reasonable choice for workshops and individual users who prioritize original engine architecture and predictable performance parameters.