BMW X3 E83 LCI 2.5si N52N N52B25A Complete Engine 218HP 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 X3 E83 LCI 2.5si N52N N52B25A Complete Engine 218HP 49k miles, WARRANTY is a complete powertrain unit from the N52 family, designed for the facelifted version of the X3 E83 2.5si. This is a modern, inline six-cylinder petrol engine, ensuring smooth operation, high refinement, and solid performance. Thanks to its low mileage and complete set of accessories, it serves as an attractive base for a professional engine replacement in your BMW.

Specifications and technical data

• SKU: 0420493-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0420493
• Substitutable numbers: 0420493, 11000420493, 0420494, 11000420494
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Engine code: N52B25A
• Mileage: 49 000

Technical characteristics of the N52B25A unit

The offered engine belongs to the N52 family, which consists of modern, naturally aspirated BMW petrol units with an aluminum block and advanced valve control technology. The engine code N52B25A denotes an inline cylinder layout, which translates into excellent balance and reduced vibrations. The use of six cylinders promotes linear power delivery and pleasant torque characteristics across the entire rev range.

The engine is designed for petrol fuel, which, combined with the N52 construction, ensures dynamic acceleration, quick throttle response, and predictable behavior under load. The unit was designed for daily use in a mid-size SUV, which is why it effectively combines performance with driving comfort.

Purpose and compatibility

The presented complete engine is dedicated to the BMW X3 E83 LCI in the 2.5si version, i.e., the facelifted model of the first-generation X3. The unit's design has been optimized for compatibility with the all-wheel-drive system and both automatic and manual transmissions used in this model. As a result, it is the right choice for replacing a damaged engine in a facelifted vehicle without the need for costly mechanical modifications.

The complete engine allows for efficient powertrain transplantation, reducing vehicle downtime at the workshop. The low mileage of the unit is a significant advantage when planning long-term vehicle operation after repair, especially for cars used both in the city and on longer routes.

Condition, origin, and benefits of buying a used engine

The unit comes from dismantling and is offered as a complete engine, which facilitates the installation process in the car. A used engine with documented, low mileage represents a reasonable compromise between repair costs and expected durability. Compared to rebuilding a heavily worn unit, choosing a complete engine with low mileage often means a lower risk of additional faults and a shorter repair time.

For many BMW X3 E83 LCI users, replacing the entire powertrain with a verified, complete engine is a more predictable solution than step-by-step repair of individual components. This allows for restoring full powertrain efficiency while maintaining the refinement characteristic of BMW six-cylinder petrol engines.

Why choose this engine for your BMW X3 E83 LCI

• Inline, six-cylinder layout ensuring high refinement.
• 218 HP petrol unit, suitable for dynamic driving.
• Complete engine, facilitating installation and shortening repair time.
• Low mileage, beneficial for future operation.
• Dedicated application for BMW X3 E83 LCI 2.5si, with no structural adaptations required.

To compare different powertrain repair strategies – between rebuilding and installing a used unit – you may find the article discussing the benefits of salvaged parts helpful, available here: remanufactured vs. used original parts for engine repair.

Technical support and additional information

Before purchasing, it is worth verifying the engine code and vehicle model version to ensure full compatibility with the electrical system and accessories in your X3. If you have any doubts regarding the choice of the powertrain or the planned scope of repair, it is recommended to consult a specialized BMW service center, which can assess the condition of other powertrain components.

If you are interested in a broader context of operation and typical problems with BMW petrol units, it is worth reading our guide material: problematic BMW E90 engines and their impact on the user's budget. This will allow you to better plan service and preventive maintenance for your car.

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 powertrains, check out the available parts in the BMW Engines category.