BMW 5 Series E60 E61 Complete Engine 525d M57N 256D2 Diesel 177HP 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 5 Series E60 E61 Complete Engine 525d M57N 256D2 Diesel 177HP WARRANTY is a proven power unit from the M57 family, designed for 5 Series diesel models. It offers the inline-six refinement characteristic of this design, high durability, and stable operating parameters. This is an excellent choice for users looking for a technically refined engine for their diesel-powered BMW.

Specifications and technical data

• SKU: 7789800-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7789800
• Substitutable numbers: 11007789801, 7789801, 11007789800, 7789800
• Fuel type: Diesel
• Number of cylinders: 6
• Category: Engines
• Mileage: 59 000

Technical characteristics of the M57N 525d unit

The engine belongs to the Engines category and represents the popular BMW inline-six cylinder design. The cylinder layout ensures good balance, reduced vibrations, and predictable behavior under load, which translates into driving comfort both on the road and in everyday use.

The unit runs on diesel fuel, which allows for a favorable ratio of fuel consumption to performance. The 525d version from the M57N family is valued on the secondary market for its stable torque characteristics, flexibility in the mid-RPM range, and good compatibility with factory BMW control systems.

Purpose and application in BMW E60 / E61

The engine was designed for the BMW 5 Series E60 (sedan) and E61 (touring) models in the 525d version. As a result, it is a suitable choice when replacing the power unit in cars factory-equipped with the M57N engine of this specification. The design is compatible with the engine bay architecture of these models, which facilitates installation in place of a worn or damaged unit.

The inline-six cylinder layout works well with factory BMW transmissions used in the 525d, ensuring smooth power delivery and predictable throttle response. This solution is frequently chosen both for standard replacements and for post-accident repairs, where compliance with the original vehicle specification is crucial.

Benefits of choosing a used BMW 525d M57N engine

M57N units are known for their robust construction, making a used engine a rational economic choice. The BMW inline-six diesel offers good durability with proper operation and maintenance, and the availability of service parts and workshop expertise on the market is extensive. Consequently, repairs and maintenance of this unit are well-understood by specialized service centers.

Choosing a used engine allows for a significant reduction in the cost of restoring the car's performance compared to purchasing a brand-new unit. For many BMW E60/E61 525d users, this is a reasonable compromise between financial outlay and maintaining the original driving characteristics for which BMW's diesel sixes are known.

To better understand the specifics of purchasing a used power unit, procedures for selection by OEM numbers, and the real cost differences compared to new parts, it is worth checking out our expert guide: Why it is worth buying used gearboxes and engines – facts instead of myths. The article helps you approach the engine purchase in an organized and data-driven manner.

Operation, installation, and selection of a replacement

The BMW 525d M57N engine, as a diesel unit, requires the use of high-quality fuel and regular maintenance to fully utilize the potential of the design. The inline-six cylinder layout promotes even loading of mechanical components, which, with proper operation, translates into predictable durability.

When selecting an engine for a specific BMW E60 or E61, it is crucial to verify compatibility with the vehicle's configuration, including factory accessories and the engine control unit. It is helpful to use the OEM part number and interchangeable numbers, which allow for precise matching of the unit to a specific equipment version. In case of doubt, it is worth consulting the choice with a mechanic specializing in the BMW brand or with the seller's technical department.

Expanding repairs in the BMW power unit area

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 blocks, cylinder heads, or complete long blocks, check out the available parts in the BMW Engines category.