BMW 1 3 Series e87 e90 e91 118i 318i 129HP Complete Engine N46B20B 80k 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 1 3 Series e87 e90 e91 118i 318i 129HP Complete Engine N46B20B 80k WARRANTY designed for the 1 and 3 Series (E87, E90, E91) in 118i and 318i versions with 129 HP is an ideal choice for users looking for a proven powertrain for professional replacement. This is a used, complete engine assembly that allows you to restore your car to full performance without the need for costly overhauls of your old engine. By maintaining the factory configuration, the engine retains the smooth operation and dynamics characteristic of BMW.

Specifications and technical data

• SKU: 0430936-1
• 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 dedicated to BMW 1 Series E87 118i and BMW 3 Series E90/E91 318i models, which were factory-equipped with the 129 HP N46B20B unit. The four-cylinder, gasoline-powered design provides the balance between performance and fuel economy typical for this generation. This solution is particularly beneficial in cases of serious damage to the existing engine, such as seizure or a cracked block.

Technical characteristics of the N46B20B unit

The N46B20B engine is a modern, four-cylinder, gasoline-powered inline unit designed for daily use in compact and mid-size cars. The cylinder and head layout promotes smooth operation and good throttle response, which translates into predictable vehicle behavior both in city traffic and on the highway. The applied design solutions allow for maintaining stable operating parameters with proper maintenance.

The unit is complete, which facilitates the replacement process in a specialized workshop. As a result, the mechanic has a cohesive powertrain at their disposal, which reduces the risk of compatibility issues with individual components and shortens installation time.

Condition, mileage, and use in repairs

The engine comes from a used vehicle and is intended for further operation after proper installation and basic maintenance. The declared mileage of the unit is relatively low for this generation, making it an attractive option for accident repairs or replacing a worn-out engine in fleet and private vehicles. This type of complete powertrain works well both for budget-conscious repairs and for careful restorations of cars in good body condition.

For workshops and individual users, it is important that the engine maintains the factory specification for the 129 HP version, which facilitates integration with the existing electrical system, cooling system, and vehicle accessories. Before installation, standard preparatory steps are recommended, such as changing the oil, filters, and checking seals.

Benefits of installing a complete BMW gasoline engine

Choosing a complete N46B20B engine for your BMW 1 and 3 Series offers a number of practical benefits:

• the ability to quickly replace a damaged unit without a long-term overhaul of the old engine,
• maintaining the original operating characteristics and power output intended for the 118i/318i versions,
• better control over repair costs thanks to a one-time replacement of the entire powertrain,
• reducing the risk of component incompatibility when assembling an engine from many different parts.

For users who value the consistency of factory solutions, this is a sensible choice that allows you to restore the car to working order while maintaining predictable operating parameters.

Selection by OEM number and technical support

The engine belongs to the Engines category and has an assigned OEM part number and interchangeable numbers, which facilitates precise verification of compatibility with a specific vehicle equipment version. When selecting a powertrain, it is worth using the VIN and manufacturer markings to avoid mistakes between variants used in different model years and configurations.

If you want to check step-by-step how to correctly match powertrain elements and other components by VIN and manufacturer markings, the following practical guide will be helpful: how to choose the right car part by VIN and OEM number. This is especially useful when working with used components, where correct identification is key.

BMW Engines – further expansion and knowledge about failure rates

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

Before purchasing a used engine for the 3 Series, it is also worth familiarizing yourself with the typical problems of this generation. A detailed discussion of the weak points of units used in the E90 can be found in the article: Faulty BMW E90 engines – what can ruin your budget. This will allow you to better plan the scope of service work after installation and approach the operation of the car after the engine replacement with full awareness.