BMW Z4 E85 E86 3.0si Complete Engine Petrol N52 N52B30A with 59k miles, 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 Z4 E85 E86 3.0si Complete Engine Petrol N52 N52B30A with 59k miles, WARRANTY is a complete powertrain from the N52 family, designed for the BMW Z4 E85/E86 generation models in the 3.0si version. This unit belongs to BMW's modern line of petrol engines, providing smooth performance, high refinement, and distinct sporty potential. Thanks to its six-cylinder configuration and advanced aluminum construction, it serves as a solid foundation for professional repair or engine replacement in a premium sports car.

Specifications and technical data

• SKU: 0421061-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0421061
• Substitutable numbers: 0421061, 11000421061, 0421062, 11 00 0421062
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Engine code: N52B30A
• Mileage: 59 000

Technical characteristics of the N52B30A engine

The presented engine belongs to the Engines category and represents BMW's family of inline six-cylinder petrol units. The R6 configuration ensures excellent balance of rotating masses, which translates into low vibration and stable operation across the entire rev range. The N52B30A code denotes a modern design with a lightweight block and an optimized cylinder head layout, engineered for efficient power delivery and effective cooling.

The engine was developed with dynamic driving in the Z4 3.0si model in mind, which is why it performs particularly well in applications where quick throttle response, linear torque delivery, and predictable behavior at high RPMs are essential. This generation of petrol engine is a popular choice for both standard daily use and projects requiring precise, repeatable performance characteristics.

Application in BMW Z4 E85/E86 3.0si

The BMW Z4 E85 E86 3.0si Complete Engine Petrol N52 N52B30A with 59k miles, WARRANTY is intended for installation in the BMW Z4 E85/E86 in the 3.0si version, which facilitates selection in terms of mechanical and auxiliary component compatibility. The unit was designed to work with the drivetrain and electronics of these specific models, making it a suitable base for replacing a damaged engine without the need for extensive structural modifications.

The inline six-cylinder layout provides the characteristic BMW sound and predictable behavior under load. In practice, this translates into stable operating parameters during highway driving as well as in urban conditions, while maintaining sufficient power reserves for overtaking and dynamic acceleration.

Condition, mileage, and suitability for further use

The offered engine is in Used condition, meaning it has been previously operated but retains parameters that allow for further use after proper installation and basic service verification. The declared mileage of the unit is important information when planning further operation – it allows for assessing the potential for continued service and planning any necessary preventive maintenance, such as replacing fluids or wear-and-tear components.

An inline six-cylinder petrol engine is a design that, with proper maintenance, handles long-term loads well. Replacing a complete engine with a unit of known origin and documented operating parameters is often a more predictable solution than repairing a heavily worn or damaged block.

Benefits of choosing a complete petrol engine

Choosing a complete petrol engine from the N52 family for the BMW Z4 E85/E86 3.0si helps reduce the risk of component incompatibility and shortens repair time. Using a unit with the correct engine code facilitates integration with the existing electrical system, cooling system, and auxiliary components, which is important for both reliability and subsequent diagnostics.

The inline six-cylinder engine ensures smooth power delivery, which is particularly noticeable in the lightweight, sporty body of the Z4. For the user, this means predictable car behavior, good flexibility, and comfortable refinement, which is important on longer journeys. This generation of petrol engine works well with standard BMW control systems, facilitating subsequent service and computer diagnostics.

Choosing a used engine and technical aspects

When selecting a used engine for a BMW Z4, it is crucial to match the unit code and operating parameters to the specific vehicle configuration. Proper selection helps avoid issues with ECU, auxiliary component, and exhaust system compatibility. In practice, this means fewer modifications and a faster return of the vehicle to full functionality.

To better understand how to safely and consciously choose used power units, it is worth reading an expert guide discussing facts and myths about such components, VIN and OEM selection procedures, and cost analysis – this is described in detail in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

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 blocks, cylinder heads, or complete power units, check the available parts in the BMW Engines category.

For those interested in a broader look at BMW powertrain solutions, including the differences between standard units and M or M Performance variants, material describing the use of sports components and the rationale for using used components may also be helpful – more information can be found in the article BMW M Performance: how do BMW M components differ from standard ones?.