BMW E90 LCI F10 F20 F30 Engine Cylinder Head Rocker N55 135i 335i 535i 7605102

BMW E90 LCI F10 F20 Engine Cylinder Head Rocker N55 135i 335i 535i is an original component from the Cylinder Heads group, designed for advanced BMW powertrains. This used OEM part ensures factory-fitment to the engine system, facilitating professional repair or reconstruction of the power unit. It is a solution for workshops and users who expect precise port geometry and proper compatibility with diesel engine accessories.

Specifications and technical data

• SKU: 7624429
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7624429
• Substitutable numbers: 7624429, 11127624429
• Fuel type: Diesel
• Category: Cylinder Heads

Purpose and powertrain compatibility

The presented cylinder head is structurally adapted to the BMW N55 engine family, used in the 1, 3, and 5 series models. The component works with a Diesel fuel system, which means it features appropriately designed combustion chambers, intake and exhaust ports, and mating surfaces for the engine block and manifolds.

Its original BMW origin helps maintain the correct operating characteristics of the powertrain, including proper compression pressure, stable idle, and correct interaction with the engine control system. As a result, the cylinder head provides a solid foundation for further rebuilding or servicing of the power unit.

Construction and technical properties of the cylinder head

The cylinder head is responsible for managing the air-fuel mixture, exhaust gas discharge, and the stable seating of valves, injectors, and glow plugs. In the case of a diesel engine, the key features are:

• precise valve guides and seats ensuring combustion system tightness,
• cooling channels optimized for heat dissipation from the combustion chamber area,
• mating surface for the cylinder head gasket prepared for further machining and assembly,
• intake and exhaust port geometry matched to standard BMW accessories.

This configuration allows for the maintenance of standard engine operating parameters after proper installation and potential regeneration in accordance with the manufacturer's procedures.

Application in repairs and upgrades

The cylinder head from this series is often used for:

• comprehensive overhauls of BMW N55 family engines,
• repairs following thermal or mechanical damage to the factory head,
• rebuilding power units in fleet and private vehicles,
• upgrade projects where maintaining the original specification is crucial.

A used cylinder head allows for the optimization of service costs while maintaining the factory design and compatibility with standard accessories. It is a practical solution for workshops specializing in the BMW brand and for informed users who plan long-term vehicle operation.

Benefits of using an original BMW cylinder head

Using an original head from the Cylinder Heads group in a BMW engine translates into a number of practical benefits:

• factory fitment to the engine block and accessories,
• maintenance of standard operating parameters for the diesel unit,
• easier diagnostics and service due to compliance with manufacturer documentation,
• the ability to use standard assembly procedures and torque specifications.

For workshops, this means more efficient repair execution, and for the end user – greater operational predictability and stable engine performance after the service is completed.

Related components and technical knowledge

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 additional heads, covers, or mounting elements, check out the available parts in the BMW Cylinder Heads category.

For a better understanding of the specifics of BMW diesel units and optimal component selection, it is worth reading a comparative analysis of popular engines, their performance, and service costs – you will find practical information in the article BMW N47 vs M57 / M57N / M57N2 – ranking of legendary diesels, which helps in consciously planning repairs and investments in the powertrain.