BMW 1 3 Series E87 E90 120i 320i 150HP Complete Engine N46B20B w 30k m WARRANTY

BMW 1 3 Series E87 E90 120i 320i 150HP Complete Engine N46B20B w 30k m WARRANTY for the 1 Series E87 and 3 Series E90 with 150 HP is a used, original petrol unit prepared as a ready-to-install long block. This is a solution for users who want to restore the full efficiency of the powertrain in a technically correct and cost-effective manner, utilizing factory BMW engineering while maintaining compatibility with the N46B20B engine code.

Specifications and technical data

• SKU: 0430933-5
• 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

Application and compatibility

The presented engine is intended for BMW 1 Series E87 120i and BMW 3 Series E90 320i models equipped with the 150 HP N46B20B unit. The inline four-cylinder design ensures the characteristic performance typical of BMW, while the petrol fuel system allows for smooth, predictable throttle response and refinement suitable for daily driving.

Construction and technical parameters of the unit

The N46B20B engine is a four-cylinder petrol unit from the N46 family, designed as a balance between performance and fuel consumption. The inline cylinder layout promotes balanced operation, and the modern aluminum block construction (characteristic of this series) helps reduce the weight of the powertrain. The applied technical solutions ensure:

• stable operation across the entire rev range,
• adequate flexibility during acceleration,
• the possibility of further diagnostics and service using standard BMW procedures.

The unit comes from a vehicle with mileage selected to maintain a reasonable compromise between wear and cost-effectiveness of the replacement, which is important when planning long-term operation.

Condition, verification, and warranty

The engine is used, which means it has already been in operation in a vehicle but has been verified for its suitability for further installation. Key components are checked for leaks, smooth operation, and the absence of visible mechanical damage. An additional advantage is the 30,000 km warranty, which provides investment protection and allows for worry-free use after installation in the car.

Benefits of installing a used N46B20B engine

Choosing a complete, used N46B20B engine for a BMW E87/E90 is a solution that is often more cost-effective than a complete overhaul of the existing unit. The main advantages include:

• shorter repair time – the mechanic replaces the complete unit instead of performing a time-consuming rebuild of the old engine,
• maintaining the original BMW performance characteristics due to compliance with the factory engine type,
• the possibility of further service maintenance based on the manufacturer's standard procedures.

For users who want to better understand the differences between an overhaul and replacing with a used unit, the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, selection by OEM numbers and the real costs of such repairs, will be useful.

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 components from the same group, such as cylinder heads, engine accessories, or additional control modules, check the available parts in the BMW Engines category.

Summary

BMW 1 3 Series E87 E90 120i 320i 150HP Complete Engine N46B20B w 30k m WARRANTY is a technically consistent solution for drivers who want to restore the efficiency of the powertrain while maintaining the factory parameters of the petrol unit. The used nature of the product, combined with a mileage-based warranty, allows for a balance between cost control and operational safety, while compatibility with the E87 and E90 platforms facilitates installation in specialized workshops dealing with the BMW brand.