BMW 1 3 Series E87 E90 120i 320i 150HP Bare Engine N46B20B w 30k miles, 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 3 Series E87 E90 120i 320i 150HP Bare Engine N46B20B w 30k miles, WARRANTY is a used powertrain unit from the N46 family, designed for the popular 1 Series and 3 Series models. This four-cylinder petrol engine provides proven performance characteristics, and the mileage confirms its moderate wear. It is a solution for users looking for a technically matched engine block for professional repair or replacement.

Specifications and technical data

• SKU: 0430933-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0430933
• Substitutable numbers: 11000430933, 430933, 11000391997, 0391997, N46B20B, N46B20BA, 11000430932, 0430932, 11000391996, 0391996, 0430933
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Purpose and compatibility

The presented engine belongs to the Engines category and is dedicated to BMW E87 120i and E90 320i models with the N46B20B unit. The design, based on four cylinders and petrol fuel supply, allows for maintaining the factory performance characteristics, running refinement, and operational parameters specified by the manufacturer.

The unit is suitable as a replacement for the factory engine in cars where the original motor has suffered mechanical damage or requires an economically unviable repair. By maintaining the correct fuel type and cylinder layout, the risk of problems with fitting accessories and installation is minimized.

Technical characteristics of the N46 unit

The N46B20B engine is a four-cylinder, inline petrol unit, widely used in the BMW range in the mid-2000s. It is distinguished by its compact design, good balance between performance and fuel consumption, and a construction adapted for daily use. The use of four cylinders facilitates simpler maintenance compared to more complex systems.

The engine's mileage indicates a moderate level of use, which is important when planning further operation in a compact or mid-size car. The unit will perform well in both urban and highway driving, maintaining the typical characteristics of a naturally aspirated BMW petrol engine from this generation.

Application in repairs and upgrades

The N46B20B engine is a good choice in situations where the existing unit in a BMW E87 120i or E90 320i has suffered a major failure (e.g., mechanical damage, compression issues, excessive oil consumption) and a full engine block replacement is necessary. Using a complete engine from the same family allows for reducing vehicle downtime and simplifying the installation process.

In workshop practice, such a unit is often used as an element to restore a car to full efficiency after a failure, without the need to build an engine from scratch. For the user, this means the possibility of restoring factory driving parameters while maintaining reasonable costs for the entire operation.

Benefits of choosing a used BMW N46 engine

• Cost savings compared to a brand-new unit.
• Preservation of the original operating characteristics of the BMW E87/E90 series engine.
• Possibility of quick replacement of a damaged motor with a complete engine block.
• Consistency with factory accessories and vehicle installation (with correct version selection).
• A solution suitable for post-accident repairs and major overhauls.

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 engine blocks, check the available parts in the BMW Engines category.

Technical support and engine selection

When choosing a used engine for a BMW E87 or E90, it is worth paying attention to the unit designation, fuel type, and number of cylinders to avoid installation and software problems. It is also good practice to verify the service history and technical condition before installation in the vehicle.

If you want to better understand the specifics of the powertrains used in the BMW E90 series, typical faults, and potential repair costs, the following article will be helpful: Troublesome BMW E90 engines: check what can ruin your budget. Additionally, when planning the purchase of a used motor for your car in general, it is worth reading the step-by-step guide: How to buy a used car engine and not get scammed, which discusses key aspects of assessing technical condition and selecting the right unit.