BMW E46 323i 323Ci Petrol M52 170HP Bare Engine 256S4 with 109k miles, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW E46 323i 323Ci Petrol M52 170HP Bare Engine 256S4 with 109k miles, WARRANTY is a used, complete engine block in a bare engine configuration, designed for BMW 3 Series E46 models with the 170 HP M52 unit. This is a solution for users looking for a technically compatible, original foundation for an overhaul or replacement of the powertrain in petrol versions. By maintaining the correct design specifications, the bare engine serves as a solid base for the subsequent installation of accessories.

Specifications and technical data

• SKU: 0007953
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0007953
• Substitutable numbers: 0007953, 11000007953, 0007947, 11000007947, 0007954, 11000007954
• Fuel type: Petrol
• Number of cylinders: 6
• Category: Engines
• Mileage: 109 000

Technical characteristics of the engine block

The offered bare engine belongs to the Engines category and is intended for BMW cars from the E46 family in 323i and 323Ci versions with the M52 petrol unit. The design is based on an inline cylinder layout, which ensures the refinement characteristic of this series and predictable behavior under load. A bare engine means it serves as a base for transferring accessories from the previous engine, which facilitates compatibility with the vehicle's existing installation.

The petrol engine with a six-cylinder layout is a solution valued for its smooth power delivery and stable operation across the entire rev range. This type of configuration works well with both manual and automatic transmissions, and with proper maintenance, it allows for long-term operation without sudden drops in performance.

Application and fitment for BMW E46

The presented bare engine is intended for use in BMW E46 323i and 323Ci models, where maintaining compliance with the original M52 unit specification is key. Such a choice of component minimizes the risk of problems with assembly, mounts, or compatibility with the factory control electronics. In practice, this means the possibility of carrying out a replacement based on existing accessories, wiring harnesses, and the cooling system, without the need for costly structural modifications.

The bare engine will work particularly well in situations where the previous engine has suffered serious mechanical damage (e.g., seizure, cracked block), but the accessories remain in a condition suitable for further use. In such a scenario, replacing just the engine base is often more cost-effective than a complete swap of the entire unit with accessories.

Operational parameters and condition

The engine comes from a vehicle with documented operation, which allows for an assessment of its service history under real road conditions. Information about the mileage enables better planning of further service actions, such as checking seals, measuring compression, or potentially reconditioning selected elements before installation. As a used item, the bare engine may require standard preparatory activities, but it constitutes a valuable base for further rebuilding of the powertrain.

For workshops specializing in the BMW brand and for advanced users who plan to overhaul their own engine, such a bare engine is a beneficial starting point for building a functional unit while maintaining original design parameters. This allows for cost control and a phased approach to repairs – from preparing the block, through installing accessories, to final calibration.

Benefits of using an original BMW bare engine

Choosing a bare engine consistent with the factory M52 specification in the BMW E46 323i/323Ci brings a number of practical benefits:

• maintaining proper geometry and mounting points in the engine bay,
• predictable cooperation with the factory engine control unit and electrical installation,
• possibility of using existing accessories and components,
• reduction of vehicle downtime due to a simpler assembly process.

For users who appreciate the character of BMW's six-cylinder units, such a bare engine is a way to restore the car's full efficiency while maintaining its original driving character. It is also a good base for those planning more advanced overhaul or modernization work within the powertrain.

BMW engines – expansion and technical knowledge

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

For a fuller understanding of the specifics of this brand's powertrains and typical operational problems in newer generations, it is worth consulting our guide material. Practical information on the failure rates of selected engines, repair costs, and potential budget risks can be found in the article Troublesome BMW E90 engines: check what can ruin your budget!, which will allow you to better plan your car's long-term service strategy.