BMW E87 E90 E91 118i 318i 129HP Bare Engine N46B20B New Timing 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 E87 E90 E91 118i 318i 129HP Bare Engine N46B20B New Timing WARRANTY is a used power unit from the N46 family, designed for BMW 1 Series and 3 Series models. The four-cylinder petrol engine ensures efficient, dynamic acceleration and smooth operation under typical road conditions. It is a solution for users looking for a technically compatible replacement for the factory engine, allowing for the restoration of full vehicle performance at controlled costs.

Specifications and technical data

• SKU: 0430936-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0430936
• Substitutable numbers: 11000430936, 0430936, 11000391994, 0391994, 11000430937, 0430937, 11000391995, 0391995, N46B20AY
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics and intended use

The presented engine belongs to the Engines category and is intended for BMW E87 and E90 series cars in 118i and 318i versions with 129 HP. The unit runs on petrol, which translates into good operating culture, predictable torque characteristics, and easy integration with the vehicle's factory electronics.

The four-cylinder architecture provides a favorable compromise between performance and fuel consumption, as well as simpler maintenance compared to more complex multi-cylinder designs. The engine is suitable for both daily use and fleet applications, where repeatability of parameters and predictable behavior of the power unit are important.

Benefits of using the N46B20B unit

Choosing this power unit allows for consistency with the original vehicle configuration, which facilitates installation and subsequent diagnostics. The engine is compatible with the factory control systems and accessories intended for the 118i and 318i versions, thereby reducing the risk of mechanical and electronic integration issues.

Key advantages include, among others:

• maintaining the original operating characteristics of the power unit in the BMW E87 and E90,
• consistency with factory engine control unit maps,
• the ability to use existing service and diagnostic infrastructure,
• a reasonable compromise between power, flexibility, and fuel consumption.

As a used component, the engine represents an attractive alternative to new parts, allowing for optimization of repair costs while maintaining the proper operating parameters of the drivetrain.

Condition, mileage, and practical application

The unit comes from the secondary market, which means it has been previously used but is still suitable for further operation after proper installation and basic workshop verification. The declared mileage allows for an assessment of the degree of wear in relation to the typical lifespan of N46 family engines, which is important when planning the vehicle's further operation.

The N46B20B engine will prove particularly useful in situations where the previous unit has suffered a major mechanical or thermal failure and repair exceeds economic viability. Using a complete engine block from the same engine family allows for shorter vehicle downtime and simplifies the repair process compared to a major overhaul of the existing unit.

Installation and operational recommendations

Before installation, it is recommended to carry out standard preparatory activities, such as checking for leaks, verifying the condition of basic seals, and assessing the accessories that will be transferred from the previous engine. Proper preparation of the unit before installation is crucial for trouble-free operation after replacement.

To better understand the specifics of the units used in the E90 series and typical operational problems, it is worth reading the guide on the failure rates of selected engines for this model – a detailed discussion can be found in the article Faulty BMW E90 engines – what can ruin your budget. This will allow you to consciously plan service and select appropriate maintenance procedures after installation.

BMW engines – selecting elements from the same group

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