BMW F30 F31 320i F32 420i F10 F11 520i N20 N20B20B Bare Engine Block 2357459

BMW 3 F30 320I N20 N20B20B Petrol Automatic Engine Block is an original part from the Engine Blocks category, designed for petrol engines paired with an automatic transmission. This used block provides a solid foundation for a professional rebuild of the N20/N20B20B engine, enabling the restoration of proper drivetrain function in the BMW 3 Series F30.

Specifications and technical data

• SKU: 2357459
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2357459
• Substitutable numbers: 2357459, 11112357459, 2230143, 11112230143, 2349639, 11112349639
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Engine Block
• Category: Engine Blocks

Purpose and Compatibility

The presented block is dedicated to the BMW 3 Series F30 model, specifically the 320i version with the N20/N20B20B petrol engine and an automatic gearbox. The block's design is prepared for compatibility with the specific ancillary components of this engine, facilitating the transfer of existing parts from the old engine.

This precise fit ensures the preservation of factory geometry, mounting points, and the correct routing of oil and coolant channels. Consequently, the block can be used for both standard repairs and comprehensive engine rebuilds.

Engine Block Technical Specifications

This engine block belongs to the family of modern, lightweight constructions used in BMW petrol engines. It has been designed for operation with a turbocharger, a precise lubrication system, and advanced engine control.

• stable body architecture ensuring adequate rigidity under high thermal and mechanical loads,
• oil and coolant channels adapted for direct petrol injection engines,
• mounting point layout consistent with BMW's factory solutions for the 3 Series F30.

This configuration makes the block a suitable base for further workshop operations – cylinder honing, crankshaft, piston, and connecting rod installation, as well as other ancillary components.

Application in N20/N20B20B Engine Repairs and Rebuilds

In cases of mechanical damage or overheating of the original block, using a used part from the same engine family is often the most sensible solution. This allows for:

• cost reduction compared to purchasing a new block,
• maintenance of compliance with BMW's factory specifications,
• preservation of full compatibility with the automatic transmission and existing ancillary equipment.

For workshops specializing in the BMW brand, such a block serves as an excellent starting point for professional engine regeneration, maintaining the manufacturer's intended performance parameters.

Benefits of Choosing an Original BMW Block

An original BMW engine block ensures proper fitment with other drivetrain components and compliance with the manufacturer's service documentation. This facilitates:

• correct installation in the engine bay without structural modifications,
• application of standard torque specifications and service procedures,
• diagnostics and subsequent servicing using factory tools.

This makes the entire repair process more predictable and reduces the risk of installation issues.

BMW Engine Blocks – Shop Offer

If you are also looking for other BMW engine blocks for various models and engine versions, check out our dedicated category: BMW engine blocks. There you will find a wide selection of original engine blocks that can be used for repairs and rebuilds of this brand's powertrains.

Technical Knowledge and Exhaust System Operation

During a comprehensive engine repair, it is also worth paying attention to components responsible for exhaust emissions and proper engine operation. The exhaust gas recirculation system significantly impacts thermal loads and the engine's operating conditions. You can find more information on this topic in the article: EGR: What It Is and Why Consider Used EGR Valves, which discusses the system's operating principles and practical aspects of selecting and operating EGR valves.