BMW F11 LCI F22 F30 F31 N20 Bare Engine N20B20B New Timing 39k 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 F11 LCI F22 F30 F31 N20 Bare Engine N20B20B New Timing is a complete short block from the N20 family, designed for BMW models with a petrol unit. Thanks to the use of a new timing chain kit, it serves as an attractive base for professional repairs or powertrain conversions in BMW 3 Series F30 and 4 Series 420i vehicles. This is a solution for users expecting a proven unit with a modern design and optimized operating costs.

Specifications and technical data

• SKU: 2420319-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2420319
• Substitutable numbers: 11002420319, 2420319, 11002288238, 11002344133, 2288238, 2344133, 11002420320, 2420320, 11002288239, 11002344134, 2288239, 2344134, 11002420317, 2420317, 11002288236, 2288236, 11002338503, 2338503, 11002328912, 2328912
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Mileage: 39 000

Technical characteristics of the N20B20B engine

The N20B20B engine is a four-cylinder, inline petrol unit from the N20 family, used in modern BMW models. Its design, based on a compact block and an advanced cylinder head, ensures a favorable power-to-weight ratio and high refinement. The use of four cylinders allows for a smooth torque curve while reducing mechanical and thermal loads compared to highly stressed, smaller-displacement units.

The unit has been designed for efficient fuel combustion, which translates into stable operation across the entire rev range. The engine works well with both automatic and manual transmissions, facilitating its use in various factory configurations of the BMW F30 320i and 420i.

New timing chain – a key element of reliability

The presented engine features a new timing chain kit, which significantly increases its utility value. Timing chain replacement is one of the most important maintenance procedures for N20 units, as it directly affects the durability of the entire powertrain and the safety of engine operation. The new timing chain reduces the risk of failures associated with chain stretch, worn guides, or tensioners, which is particularly important when installing a used engine.

For workshops and users, this means a lower risk of unplanned downtime and more predictable operating costs after installation. The use of a fresh timing kit also allows for better utilization of the N20B20B unit's potential in terms of dynamics and smoothness of operation.

Application in BMW F30 320i and 420i

The offered engine is intended for BMW 3 Series F30 320i and 4 Series 420i models with the N20 unit. Thanks to its structural compatibility with factory BMW solutions, it can be installed in place of the original engine while maintaining the existing auxiliary equipment and control architecture. This is a practical solution for both post-accident repairs and engine replacement due to wear or mechanical damage.

The engine belongs to the Engines category, which facilitates its identification in parts catalogs and the selection of appropriate accompanying components, such as the cooling system, intake, or mounting elements. This allows the workshop to efficiently plan the entire replacement operation, minimizing vehicle downtime.

Condition, mileage, and benefits of choosing a used engine

The unit comes from the secondary market, which allows for a significant reduction in repair costs compared to purchasing a brand-new engine. Moderate mileage and a new timing chain make it an attractive alternative to rebuilding heavily worn units. In practice, the user receives a complete short block that, after proper installation and basic initial service (oil change, filters, inspection of accessories), can provide long and stable operation.

Choosing a used BMW N20 family engine is particularly beneficial for those who want to maintain the original vehicle specification, avoiding costly modifications to the electrical installation or control system. This solution is often preferred by professional workshops specializing in the BMW brand.

Part matching and technical support

The engine has an assigned OEM part number and a set of interchangeable numbers, which facilitates its precise identification in BMW catalogs and parts selection systems. Before purchasing, it is worth verifying the unit's compatibility with the specific vehicle equipment version using the VIN or service documentation. This approach minimizes the risk of error and speeds up the installation process in the workshop.

If you want to better understand how to safely choose used powertrains and what to look for when comparing offers, the following expert guide will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths. You will find practical tips on selecting parts by OEM numbers and cost analysis compared to new parts.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as complete powertrains, short blocks, or engine blocks, check out the available parts in the BMW Engines category.