BMW 1 3 Series e87 e90 118i 318i Complete Engine N46B20B New Timing 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.

The BMW 1 3 Series e87 e90 118i 318i Complete Engine N46B20B New Timing WARRANTY designed for the 1 Series E87 and 3 Series E90 models (118i, 318i) is a solution for drivers looking for a proven powertrain with maintained performance parameters. It is a used, complete engine assembly that allows for a technically sound engine replacement without the need for costly overhauls of the old unit, while ensuring consistency with the factory BMW design and predictable road performance.

Specifications and technical data

• SKU: 0430936-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 430936
• Substitutable numbers: 11000430936, 0430936, 11000391994, 0391994, 11000430937, 0430937, 11000391995, 0391995, N46B20BY
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Purpose and compatibility with BMW 1 and 3 Series

The offered engine is structurally matched to the popular BMW 1 Series E87 and 3 Series E90 models in 118i and 318i versions, which facilitates its use as a replacement for the factory unit. By maintaining the original powertrain architecture, the driver receives a unit fully compliant with the manufacturer's specifications, without the need to modify the installation or auxiliary components in the engine bay.

The engine belongs to the Engines category, which means it is a complete powertrain assembly, not a single component. This type of solution is particularly beneficial in cases of major failures, where repairing the existing unit is economically unjustified.

Technical characteristics of the N46 unit

The N46B20B engine is a four-cylinder, inline petrol unit, known for its smooth operation and refinement typical of BMW designs. The use of petrol fuel promotes smooth power delivery, and the four-cylinder layout provides a favorable compromise between dynamics and fuel consumption.

In practice, this means:

• stable operation across the full rev range,
• good throttle response in daily city and highway driving,
• easier diagnostics and service thanks to the wide availability of technical data for this engine family.

An additional advantage is the relatively low mileage of the unit, which translates into less wear on moving parts and potentially longer service life after installation in the car.

Condition, preparation, and practical application

The engine is offered as a used complete powertrain assembly, which allows for its installation in place of a damaged unit while maintaining the factory BMW design concept. This type of solution is often chosen by workshops specializing in the BMW brand, as it enables shorter repair times and reduced costs compared to a full engine rebuild.

The unit will prove effective both in the event of a mechanical failure and when an engine replacement is necessary due to operational damage. Thanks to the preservation of the original cylinder layout and petrol fuel supply configuration, after proper installation and ECU adaptation, it is possible to achieve performance parameters close to factory standards.

Selection by numbers and technical support

The engine has a dedicated OEM part number and a set of interchangeable numbers, which facilitates its identification and selection for a specific vehicle. When matching the unit, it is worth using the VIN and engine code to confirm full compatibility with the car's configuration, including accessories and control systems.

For users who want to better understand the process of choosing a used powertrain, the procedures for selection by VIN, and the real cost differences between repair and replacement, the expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. The article explains step-by-step how to consciously approach the purchase of a used engine and what to pay attention to during installation.

BMW Engines – expansion and modernization of the powertrain

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 blocks, cylinder heads, or complete powertrain assemblies, check the available parts in the BMW Engines category.

If you are considering whether a new component or a proven part from the secondary market is a better choice in your case, it is worth reading the comparison of costs and durability in the article: Car parts – new or used? We compare costs, quality, and durability. This is a practical supplement to your knowledge when planning major work on the BMW powertrain.