BMW 1 3 Series e87 e90 120i 320i 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.

BMW 1 3 Series e87 e90 120i 320i Complete Engine N46B20B New Timing WARRANTY is a complete powertrain from the BMW four-cylinder petrol engine family, designed for 1 and 3 Series models. The engine belongs to the Engines category and is a solution for users looking for a proven, used unit with the timing service already performed. This makes it an attractive base for professional repair or engine replacement in BMW vehicles with the N46B20B designation.

Specifications and technical data

• SKU: 0430933-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 430933
• Substitutable numbers: 11000430933, 430933, 11000391997, 0391997, N46B20B, N46B20BA, 11000430932, 0430932, 11000391996, 0391996
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 59 000

Technical characteristics of the N46B20B unit

The presented engine is a four-cylinder, inline petrol unit, designed for dynamic yet predictable performance in daily operation. Fuel type: petrol ensures smooth throttle response and the refinement typical of modern BMW engines. The four-cylinder configuration provides a favorable compromise between performance and fuel consumption, which is particularly important in 120i and 320i models.

A significant advantage of this unit is the new timing, which significantly reduces the risk of failure in one of the key areas of the engine and lowers future maintenance costs. The engine comes from a vehicle with moderate mileage, which, combined with the performed timing service, makes it a solid proposition for installation in place of a worn or damaged unit.

Application in BMW E87 and E90 models

The N46B20B engine is used in popular BMW 1 Series E87 (120i versions) and 3 Series E90 (320i versions) models, where it provides power for daily city and highway driving. The design of this unit was developed to combine comfort, flexibility, and adequate power reserves, which fits well with the character of BMW's compact and mid-size models.

By maintaining the factory architecture and parameters, replacing it with this engine allows you to retain the vehicle's original driving characteristics without the need for modifications to the installation or accessories. The Engines category in this case means a fully functional powertrain that, after proper installation and basic maintenance, can continue to operate in the vehicle for a long time.

Benefits of choosing a used engine with new timing

Choosing a used engine with the timing service already performed is a solution that allows for significant cost savings compared to purchasing a brand-new unit. New timing eliminates one of the most expensive and time-consuming service operations that are standardly recommended after purchasing a used engine. Additionally, the moderate mileage of this unit increases its potential for further operation.

A used engine offers the possibility of an economical vehicle repair after a failure, while maintaining the manufacturer's original specifications. This is particularly important in the case of BMW models, where matching the powertrain to the rest of the drivetrain and electronics is crucial for the trouble-free operation of the entire car.

Selection by numbers and technical support

The N46B20B unit has an assigned OEM part number and a set of interchangeable numbers, which facilitates precise identification and selection for a specific BMW vehicle. Before purchasing, it is worth verifying compatibility by OEM number or reference numbers, as well as by vehicle data, to ensure full compatibility with the installation and accessories in the car.

If you want to better understand how to safely buy used powertrains, what the real cost differences are compared to new parts, and how to correctly select an engine by VIN or OEM number, check out our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. This is a practical addition to your knowledge before making a purchase decision.

Expanding engine area repairs for BMW

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 additional powertrains, blocks, or complete long blocks, check out the available parts in the BMW Engines category.