BMW X5 F15 X6 F16 M50dX Complete Engine N57X N57D30C 381HP 49k 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 X5 F15 X6 F16 M50dX Complete Engine N57X N57D30C 381HP 49k miles, WARRANTY is a complete powertrain from the N57 family, designed for the high-performance M50dX versions. This is a solution for users expecting high efficiency from a diesel unit, maintaining factory performance parameters and the characteristics typical of BMW's sports variants. By preserving the original configuration, the engine serves as a solid base for professional repair or replacement in premium class vehicles.

Specifications and technical data

• SKU: 2355858-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2355858
• Substitutable numbers: 2355858, 11002355858, 2355859, 11002355859
• Fuel type: Diesel
• Number of cylinders: 6
• Category: Engines
• Engine code: N57D30C
• Mileage: 49 000

Technical characteristics of the N57D30C unit

The engine belongs to the Engines category and represents a modern BMW diesel design from the N57 family, used in the X5 F15 and X6 F16 models in the M50dX version. The cylinder layout ensures smooth operation, high refinement, and an adequate torque reserve, which is particularly important in heavier, high-performance SUV vehicles.

The unit was designed for dynamic driving while maintaining the efficiency typical of diesel engines. The appropriate configuration of the injection and turbocharging system (characteristic of the N57 series) allows for high rated power while maintaining stable operation across the full load range, both in city traffic and on the highway.

Application in BMW X5 F15 and X6 F16 M50dX

The presented engine is intended for installation in BMW X5 F15 and BMW X6 F16 models in M50dX versions, where it is responsible for powering the all-wheel-drive vehicle. The unit's construction is adapted to work with advanced drivetrain systems and traction control, which translates into predictable vehicle behavior at higher speeds and during intense acceleration.

By maintaining the original specification, the engine allows for the restoration of full drivetrain functionality after a failure or wear of the previous unit. This is particularly important for premium class cars, where consistency with the factory configuration is significant for both durability and subsequent service diagnostics.

Operational parameters and benefits of installation

The diesel engine used in this M50dX version combines power with fuel efficiency, which is typical for modern BMW Diesel units. The number of cylinders and the design of the crankshaft-piston system promote smooth power delivery, and the well-tuned torque characteristics facilitate towing, driving under load, and dynamic overtaking.

The relatively low mileage in the context of units in this class favors further operation after proper installation and service maintenance. For the user, this means the possibility of restoring the vehicle to full efficiency while maintaining original BMW technology, without the need to use replacements with uncertain parameters.

Professional selection and engine installation

When selecting this unit for a specific BMW X5 F15 or X6 F16 M50dX, it is crucial to verify the compatibility of the engine code and reference numbers with the vehicle's documentation. This avoids problems with the compatibility of accessories, the engine control unit, and the electrical installation. Installation in a specialized service center with experience in N57 units is recommended, as it minimizes the risk of assembly errors and speeds up the startup process after replacement.

For users who want to deepen their knowledge about purchasing used power units, an expert guide discussing facts and myths related to such components, procedures for selection by VIN and OEM, and cost analysis will be useful – you can find it in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

BMW Engines – expansion and modernization of the drivetrain

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 power units, check the available parts in the BMW Engines category.

In the case of premium class cars, the use of original, used drivetrain components is also significant for the future value of the vehicle. It is worth reading the analysis of the impact of such solutions on the car's resale price, described in the guide Original used parts vs. car resale price – how not to lose money?, which will facilitate making an informed investment decision when replacing the engine.